./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/modp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/array-fpi/modp.c -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 817f5f6ccae9ad487c2c79b7cbb3a82d69086f4c5d9b5c90d8a560b10cc6dfa3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 12:24:01,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 12:24:01,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 12:24:01,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 12:24:01,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 12:24:01,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 12:24:01,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 12:24:01,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 12:24:01,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 12:24:01,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 12:24:01,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 12:24:01,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 12:24:01,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 12:24:01,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 12:24:01,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 12:24:01,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 12:24:01,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 12:24:01,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 12:24:01,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 12:24:01,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 12:24:01,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 12:24:01,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 12:24:01,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 12:24:01,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 12:24:01,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 12:24:01,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 12:24:01,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 12:24:01,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 12:24:01,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 12:24:01,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 12:24:01,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 12:24:01,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 12:24:01,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 12:24:01,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 12:24:01,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 12:24:01,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 12:24:01,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 12:24:01,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 12:24:01,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 12:24:01,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 12:24:01,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 12:24:01,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 12:24:01,502 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 12:24:01,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 12:24:01,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 12:24:01,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 12:24:01,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 12:24:01,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 12:24:01,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 12:24:01,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 12:24:01,505 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 12:24:01,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 12:24:01,506 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 12:24:01,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 12:24:01,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 12:24:01,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 12:24:01,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 12:24:01,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 12:24:01,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 12:24:01,507 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 12:24:01,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 12:24:01,507 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 12:24:01,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 12:24:01,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 12:24:01,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 12:24:01,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 12:24:01,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 12:24:01,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 12:24:01,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 12:24:01,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 12:24:01,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 12:24:01,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 12:24:01,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 12:24:01,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 12:24:01,509 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 12:24:01,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 12:24:01,509 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 12:24:01,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 817f5f6ccae9ad487c2c79b7cbb3a82d69086f4c5d9b5c90d8a560b10cc6dfa3 [2023-02-18 12:24:01,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 12:24:01,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 12:24:01,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 12:24:01,737 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 12:24:01,738 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 12:24:01,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/modp.c [2023-02-18 12:24:02,937 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 12:24:03,094 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 12:24:03,094 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/modp.c [2023-02-18 12:24:03,103 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3181d2558/668c3f75eb44418f974e16a4f35832cd/FLAG0b67ebb42 [2023-02-18 12:24:03,119 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3181d2558/668c3f75eb44418f974e16a4f35832cd [2023-02-18 12:24:03,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 12:24:03,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 12:24:03,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 12:24:03,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 12:24:03,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 12:24:03,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@150ce206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03, skipping insertion in model container [2023-02-18 12:24:03,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 12:24:03,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 12:24:03,284 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/array-fpi/modp.c[587,600] [2023-02-18 12:24:03,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 12:24:03,309 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 12:24:03,318 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/array-fpi/modp.c[587,600] [2023-02-18 12:24:03,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 12:24:03,338 INFO L208 MainTranslator]: Completed translation [2023-02-18 12:24:03,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03 WrapperNode [2023-02-18 12:24:03,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 12:24:03,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 12:24:03,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 12:24:03,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 12:24:03,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,365 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2023-02-18 12:24:03,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 12:24:03,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 12:24:03,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 12:24:03,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 12:24:03,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 12:24:03,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 12:24:03,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 12:24:03,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 12:24:03,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (1/1) ... [2023-02-18 12:24:03,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 12:24:03,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 12:24:03,428 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) [2023-02-18 12:24:03,442 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 [2023-02-18 12:24:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 12:24:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 12:24:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 12:24:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 12:24:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 12:24:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 12:24:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 12:24:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 12:24:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 12:24:03,531 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 12:24:03,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 12:24:03,732 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 12:24:03,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 12:24:03,739 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 12:24:03,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 12:24:03 BoogieIcfgContainer [2023-02-18 12:24:03,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 12:24:03,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 12:24:03,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 12:24:03,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 12:24:03,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 12:24:03" (1/3) ... [2023-02-18 12:24:03,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 12:24:03, skipping insertion in model container [2023-02-18 12:24:03,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:24:03" (2/3) ... [2023-02-18 12:24:03,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 12:24:03, skipping insertion in model container [2023-02-18 12:24:03,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 12:24:03" (3/3) ... [2023-02-18 12:24:03,747 INFO L112 eAbstractionObserver]: Analyzing ICFG modp.c [2023-02-18 12:24:03,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 12:24:03,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 12:24:03,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 12:24:03,825 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;@3a87920e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 12:24:03,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 12:24:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) [2023-02-18 12:24:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 12:24:03,834 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:24:03,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:24:03,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:24:03,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:24:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2023-02-18 12:24:03,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 12:24:03,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474758936] [2023-02-18 12:24:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:24:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 12:24:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:24:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 12:24:04,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474758936] [2023-02-18 12:24:04,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 12:24:04,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101725325] [2023-02-18 12:24:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:24:04,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 12:24:04,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 12:24:04,005 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) [2023-02-18 12:24:04,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 12:24:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:24:04,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 12:24:04,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:24:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:24:04,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 12:24:04,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101725325] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 12:24:04,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 12:24:04,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 12:24:04,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516402106] [2023-02-18 12:24:04,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 12:24:04,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 12:24:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 12:24:04,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 12:24:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 12:24:04,173 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-02-18 12:24:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:24:04,187 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-02-18 12:24:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 12:24:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2023-02-18 12:24:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:24:04,194 INFO L225 Difference]: With dead ends: 38 [2023-02-18 12:24:04,194 INFO L226 Difference]: Without dead ends: 17 [2023-02-18 12:24:04,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 12:24:04,199 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 12:24:04,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 12:24:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-18 12:24:04,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-18 12:24:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2023-02-18 12:24:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-18 12:24:04,224 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-02-18 12:24:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:24:04,225 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-18 12:24:04,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-02-18 12:24:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-18 12:24:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 12:24:04,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:24:04,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:24:04,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 12:24:04,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 12:24:04,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:24:04,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:24:04,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2023-02-18 12:24:04,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 12:24:04,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079059357] [2023-02-18 12:24:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:24:04,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 12:24:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:24:04,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 12:24:04,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079059357] [2023-02-18 12:24:04,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 12:24:04,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121468716] [2023-02-18 12:24:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:24:04,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 12:24:04,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 12:24:04,472 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) [2023-02-18 12:24:04,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 12:24:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:24:04,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 12:24:04,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:24:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:24:04,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 12:24:04,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121468716] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 12:24:04,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 12:24:04,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 12:24:04,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37248982] [2023-02-18 12:24:04,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 12:24:04,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 12:24:04,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 12:24:04,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 12:24:04,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 12:24:04,596 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-02-18 12:24:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:24:04,640 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-02-18 12:24:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 12:24:04,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-02-18 12:24:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:24:04,641 INFO L225 Difference]: With dead ends: 37 [2023-02-18 12:24:04,641 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 12:24:04,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 12:24:04,643 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 12:24:04,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 12:24:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 12:24:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-02-18 12:24:04,647 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) [2023-02-18 12:24:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-18 12:24:04,648 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2023-02-18 12:24:04,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:24:04,648 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-18 12:24:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-02-18 12:24:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-18 12:24:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 12:24:04,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:24:04,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:24:04,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 12:24:04,854 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,SelfDestructingSolverStorable1 [2023-02-18 12:24:04,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:24:04,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:24:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2023-02-18 12:24:04,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 12:24:04,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804242603] [2023-02-18 12:24:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:24:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 12:24:04,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 12:24:04,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669251588] [2023-02-18 12:24:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:24:04,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 12:24:04,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 12:24:04,913 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) [2023-02-18 12:24:04,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 12:24:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:24:04,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 12:24:05,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:24:05,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 12:24:05,094 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 28 treesize of output 16 [2023-02-18 12:24:05,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:24:05,146 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 1 case distinctions, treesize of input 32 treesize of output 59 [2023-02-18 12:24:05,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:24:05,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 126 treesize of output 134 [2023-02-18 12:24:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:24:05,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 12:25:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 12:25:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804242603] [2023-02-18 12:25:06,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 12:25:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669251588] [2023-02-18 12:25:06,633 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2023-02-18 12:25:06,634 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 139 [2023-02-18 12:25:06,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 12:25:06,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 12:25:06,835 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:898) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 45 more [2023-02-18 12:25:06,838 INFO L158 Benchmark]: Toolchain (without parser) took 63714.27ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 94.4MB in the beginning and 119.9MB in the end (delta: -25.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2023-02-18 12:25:06,838 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 12:25:06,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.16ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 83.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 12:25:06,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.29ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 12:25:06,839 INFO L158 Benchmark]: Boogie Preprocessor took 22.95ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 80.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 12:25:06,840 INFO L158 Benchmark]: RCFGBuilder took 340.96ms. Allocated memory is still 142.6MB. Free memory was 80.7MB in the beginning and 108.2MB in the end (delta: -27.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2023-02-18 12:25:06,840 INFO L158 Benchmark]: TraceAbstraction took 63094.97ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 107.5MB in the beginning and 119.9MB in the end (delta: -12.4MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2023-02-18 12:25:06,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.16ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 83.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.29ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.95ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 80.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.96ms. Allocated memory is still 142.6MB. Free memory was 80.7MB in the beginning and 108.2MB in the end (delta: -27.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 63094.97ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 107.5MB in the beginning and 119.9MB in the end (delta: -12.4MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/array-fpi/modp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 817f5f6ccae9ad487c2c79b7cbb3a82d69086f4c5d9b5c90d8a560b10cc6dfa3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 12:25:08,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 12:25:08,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 12:25:08,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 12:25:08,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 12:25:08,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 12:25:08,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 12:25:08,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 12:25:08,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 12:25:08,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 12:25:08,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 12:25:08,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 12:25:08,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 12:25:08,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 12:25:08,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 12:25:08,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 12:25:08,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 12:25:08,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 12:25:08,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 12:25:08,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 12:25:08,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 12:25:08,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 12:25:08,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 12:25:08,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 12:25:08,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 12:25:08,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 12:25:08,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 12:25:08,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 12:25:08,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 12:25:08,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 12:25:08,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 12:25:08,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 12:25:08,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 12:25:08,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 12:25:08,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 12:25:08,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 12:25:08,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 12:25:08,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 12:25:08,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 12:25:08,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 12:25:08,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 12:25:08,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-18 12:25:08,745 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 12:25:08,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 12:25:08,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 12:25:08,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 12:25:08,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 12:25:08,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 12:25:08,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 12:25:08,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 12:25:08,749 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 12:25:08,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 12:25:08,750 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 12:25:08,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 12:25:08,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 12:25:08,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 12:25:08,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 12:25:08,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 12:25:08,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 12:25:08,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 12:25:08,752 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 12:25:08,752 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 12:25:08,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 12:25:08,753 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 12:25:08,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 12:25:08,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 12:25:08,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 12:25:08,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 12:25:08,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 12:25:08,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 12:25:08,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 12:25:08,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 12:25:08,755 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 12:25:08,755 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 12:25:08,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 12:25:08,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 12:25:08,756 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 12:25:08,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 12:25:08,756 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 12:25:08,756 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 12:25:08,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 817f5f6ccae9ad487c2c79b7cbb3a82d69086f4c5d9b5c90d8a560b10cc6dfa3 [2023-02-18 12:25:09,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 12:25:09,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 12:25:09,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 12:25:09,078 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 12:25:09,078 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 12:25:09,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/modp.c [2023-02-18 12:25:10,306 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 12:25:10,520 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 12:25:10,520 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/modp.c [2023-02-18 12:25:10,533 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28e2e0c08/e543d0d3c0784315bc7394609b0f712f/FLAG98a91f7ee [2023-02-18 12:25:10,546 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28e2e0c08/e543d0d3c0784315bc7394609b0f712f [2023-02-18 12:25:10,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 12:25:10,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 12:25:10,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 12:25:10,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 12:25:10,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 12:25:10,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2d1a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10, skipping insertion in model container [2023-02-18 12:25:10,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 12:25:10,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 12:25:10,691 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/array-fpi/modp.c[587,600] [2023-02-18 12:25:10,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 12:25:10,719 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 12:25:10,730 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/array-fpi/modp.c[587,600] [2023-02-18 12:25:10,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 12:25:10,750 INFO L208 MainTranslator]: Completed translation [2023-02-18 12:25:10,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10 WrapperNode [2023-02-18 12:25:10,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 12:25:10,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 12:25:10,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 12:25:10,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 12:25:10,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,778 INFO L138 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2023-02-18 12:25:10,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 12:25:10,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 12:25:10,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 12:25:10,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 12:25:10,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 12:25:10,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 12:25:10,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 12:25:10,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 12:25:10,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (1/1) ... [2023-02-18 12:25:10,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 12:25:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 12:25:10,846 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) [2023-02-18 12:25:10,879 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 [2023-02-18 12:25:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 12:25:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 12:25:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 12:25:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 12:25:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-18 12:25:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 12:25:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 12:25:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 12:25:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 12:25:11,004 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 12:25:11,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 12:25:11,264 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 12:25:11,269 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 12:25:11,269 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 12:25:11,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 12:25:11 BoogieIcfgContainer [2023-02-18 12:25:11,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 12:25:11,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 12:25:11,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 12:25:11,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 12:25:11,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 12:25:10" (1/3) ... [2023-02-18 12:25:11,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef504e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 12:25:11, skipping insertion in model container [2023-02-18 12:25:11,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:25:10" (2/3) ... [2023-02-18 12:25:11,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef504e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 12:25:11, skipping insertion in model container [2023-02-18 12:25:11,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 12:25:11" (3/3) ... [2023-02-18 12:25:11,278 INFO L112 eAbstractionObserver]: Analyzing ICFG modp.c [2023-02-18 12:25:11,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 12:25:11,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 12:25:11,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 12:25:11,334 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;@96e86f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 12:25:11,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 12:25:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) [2023-02-18 12:25:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 12:25:11,357 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:25:11,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:25:11,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:25:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:25:11,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2023-02-18 12:25:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 12:25:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280126267] [2023-02-18 12:25:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:25:11,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:25:11,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 12:25:11,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 12:25:11,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-18 12:25:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:25:11,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 12:25:11,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:25:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:25:11,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 12:25:11,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 12:25:11,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280126267] [2023-02-18 12:25:11,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280126267] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 12:25:11,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 12:25:11,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 12:25:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310030234] [2023-02-18 12:25:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 12:25:11,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 12:25:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 12:25:11,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 12:25:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 12:25:11,632 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-02-18 12:25:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:25:11,648 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-02-18 12:25:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 12:25:11,650 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2023-02-18 12:25:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:25:11,656 INFO L225 Difference]: With dead ends: 38 [2023-02-18 12:25:11,656 INFO L226 Difference]: Without dead ends: 17 [2023-02-18 12:25:11,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 12:25:11,662 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 12:25:11,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 12:25:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-18 12:25:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-18 12:25:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2023-02-18 12:25:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-18 12:25:11,691 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-02-18 12:25:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:25:11,692 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-18 12:25:11,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-02-18 12:25:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-18 12:25:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 12:25:11,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:25:11,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:25:11,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-18 12:25:11,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:25:11,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:25:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:25:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2023-02-18 12:25:11,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 12:25:11,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088015447] [2023-02-18 12:25:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:25:11,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:25:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 12:25:11,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 12:25:11,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-18 12:25:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:25:12,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 12:25:12,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:25:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:25:12,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 12:25:12,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 12:25:12,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088015447] [2023-02-18 12:25:12,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088015447] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 12:25:12,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 12:25:12,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 12:25:12,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068906353] [2023-02-18 12:25:12,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 12:25:12,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 12:25:12,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 12:25:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 12:25:12,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 12:25:12,130 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-18 12:25:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:25:12,241 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-02-18 12:25:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 12:25:12,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2023-02-18 12:25:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:25:12,247 INFO L225 Difference]: With dead ends: 37 [2023-02-18 12:25:12,247 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 12:25:12,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-18 12:25:12,248 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 57 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 12:25:12,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 13 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 12:25:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 12:25:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-02-18 12:25:12,254 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) [2023-02-18 12:25:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-18 12:25:12,255 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2023-02-18 12:25:12,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:25:12,255 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-18 12:25:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-18 12:25:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-18 12:25:12,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 12:25:12,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:25:12,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:25:12,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-18 12:25:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:25:12,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:25:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:25:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2023-02-18 12:25:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 12:25:12,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170744791] [2023-02-18 12:25:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:25:12,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:25:12,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 12:25:12,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 12:25:12,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-18 12:25:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:25:12,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-18 12:25:12,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:25:12,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 12:25:12,641 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 25 treesize of output 13 [2023-02-18 12:25:12,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:25:12,700 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 1 case distinctions, treesize of input 29 treesize of output 56 [2023-02-18 12:25:12,771 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 50 treesize of output 26 [2023-02-18 12:25:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:25:12,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 12:25:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:25:25,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 12:25:25,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170744791] [2023-02-18 12:25:25,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170744791] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 12:25:25,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 12:25:25,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-02-18 12:25:25,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109489861] [2023-02-18 12:25:25,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 12:25:25,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 12:25:25,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 12:25:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 12:25:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=348, Unknown=3, NotChecked=0, Total=462 [2023-02-18 12:25:25,729 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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) [2023-02-18 12:25:34,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:25:36,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:25:38,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:25:40,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:25:42,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:25:49,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 12:25:52,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 12:25:54,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 12:26:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:26:06,930 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-02-18 12:26:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 12:26:06,937 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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 16 [2023-02-18 12:26:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:26:06,938 INFO L225 Difference]: With dead ends: 65 [2023-02-18 12:26:06,938 INFO L226 Difference]: Without dead ends: 46 [2023-02-18 12:26:06,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=543, Invalid=1616, Unknown=3, NotChecked=0, Total=2162 [2023-02-18 12:26:06,940 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 189 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 36 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-02-18 12:26:06,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 79 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 196 Invalid, 8 Unknown, 0 Unchecked, 24.6s Time] [2023-02-18 12:26:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-18 12:26:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2023-02-18 12:26:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2023-02-18 12:26:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-18 12:26:06,948 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2023-02-18 12:26:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:26:06,949 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-18 12:26:06,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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) [2023-02-18 12:26:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-18 12:26:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 12:26:06,950 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:26:06,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:26:06,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-02-18 12:26:07,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:26:07,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:26:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:26:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 2 times [2023-02-18 12:26:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 12:26:07,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176851947] [2023-02-18 12:26:07,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 12:26:07,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:26:07,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 12:26:07,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 12:26:07,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-18 12:26:07,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 12:26:07,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 12:26:07,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 12:26:07,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:26:07,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 12:26:07,443 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 25 treesize of output 13 [2023-02-18 12:26:07,544 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 27 treesize of output 15 [2023-02-18 12:26:07,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:26:07,794 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 1 case distinctions, treesize of input 31 treesize of output 58 [2023-02-18 12:26:08,009 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 33 treesize of output 32 [2023-02-18 12:26:08,209 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 52 treesize of output 28 [2023-02-18 12:26:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:26:08,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 12:26:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:26:29,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 12:26:29,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176851947] [2023-02-18 12:26:29,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176851947] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 12:26:29,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 12:26:29,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2023-02-18 12:26:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511106956] [2023-02-18 12:26:29,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 12:26:29,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-18 12:26:29,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 12:26:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-18 12:26:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=588, Unknown=5, NotChecked=0, Total=702 [2023-02-18 12:26:29,805 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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) [2023-02-18 12:26:57,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:26:59,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:01,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:03,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:06,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:08,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:10,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:12,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:22,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:29,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:35,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:47,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:49,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:27:51,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:28:12,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 12:28:14,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 12:28:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:28:47,216 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2023-02-18 12:28:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-18 12:28:47,216 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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 20 [2023-02-18 12:28:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:28:47,217 INFO L225 Difference]: With dead ends: 88 [2023-02-18 12:28:47,217 INFO L226 Difference]: Without dead ends: 73 [2023-02-18 12:28:47,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 101.3s TimeCoverageRelationStatistics Valid=782, Invalid=3760, Unknown=14, NotChecked=0, Total=4556 [2023-02-18 12:28:47,220 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 237 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 101 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.3s IncrementalHoareTripleChecker+Time [2023-02-18 12:28:47,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 123 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 346 Invalid, 16 Unknown, 0 Unchecked, 58.3s Time] [2023-02-18 12:28:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-18 12:28:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2023-02-18 12:28:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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) [2023-02-18 12:28:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-02-18 12:28:47,231 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 20 [2023-02-18 12:28:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:28:47,231 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-02-18 12:28:47,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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) [2023-02-18 12:28:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-02-18 12:28:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 12:28:47,232 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:28:47,233 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:28:47,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-18 12:28:47,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:28:47,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:28:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:28:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1692758954, now seen corresponding path program 3 times [2023-02-18 12:28:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 12:28:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308247350] [2023-02-18 12:28:47,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 12:28:47,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:28:47,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 12:28:47,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 12:28:47,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-18 12:28:47,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-18 12:28:47,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 12:28:47,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 12:28:47,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:28:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 12:28:48,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 12:28:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 12:28:51,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 12:28:51,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308247350] [2023-02-18 12:28:51,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308247350] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 12:28:51,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 12:28:51,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-02-18 12:28:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534885194] [2023-02-18 12:28:51,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 12:28:51,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 12:28:51,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 12:28:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 12:28:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-02-18 12:28:51,010 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2023-02-18 12:28:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:28:56,584 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2023-02-18 12:28:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 12:28:56,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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 20 [2023-02-18 12:28:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:28:56,585 INFO L225 Difference]: With dead ends: 76 [2023-02-18 12:28:56,585 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 12:28:56,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2023-02-18 12:28:56,587 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-18 12:28:56,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 70 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-18 12:28:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 12:28:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2023-02-18 12:28:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 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) [2023-02-18 12:28:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-02-18 12:28:56,597 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 20 [2023-02-18 12:28:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:28:56,598 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-02-18 12:28:56,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2023-02-18 12:28:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-02-18 12:28:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 12:28:56,599 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:28:56,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:28:56,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-02-18 12:28:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:28:56,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:28:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:28:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 1 times [2023-02-18 12:28:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 12:28:56,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737646088] [2023-02-18 12:28:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 12:28:56,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:28:56,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 12:28:56,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 12:28:56,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-18 12:28:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 12:28:57,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 12:28:57,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:28:57,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 12:28:57,061 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 12:28:57,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:28:57,062 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 1 case distinctions, treesize of input 19 treesize of output 35 [2023-02-18 12:28:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 12:28:57,130 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 12:28:57,130 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:28:57,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 47 [2023-02-18 12:28:58,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:28:58,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 95 [2023-02-18 12:28:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 12:28:58,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 12:30:01,890 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.base| (_ BitVec 32)) (~N~0 (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (not (= (_ bv0 32) (bvsrem .cse0 ~N~0))) (= (_ bv0 32) (bvsrem (select (select (store |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (bvmul (_ bv4 32) (_ bv0 32))) .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))))) is different from true [2023-02-18 12:30:01,963 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 78 treesize of output 76 [2023-02-18 12:30:01,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 75 treesize of output 65 [2023-02-18 12:30:02,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 50 treesize of output 48 [2023-02-18 12:30:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 12:30:02,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 12:30:02,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737646088] [2023-02-18 12:30:02,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737646088] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 12:30:02,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 12:30:02,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-02-18 12:30:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770235806] [2023-02-18 12:30:02,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 12:30:02,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 12:30:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 12:30:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 12:30:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=347, Unknown=23, NotChecked=38, Total=462 [2023-02-18 12:30:02,046 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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) [2023-02-18 12:30:08,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:11,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:13,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:15,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:21,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:35,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:37,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:39,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:55,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:30:58,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:31:07,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:17,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:19,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:30,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:40,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:42,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:44,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:46,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:48,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:50,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:31:57,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:32:07,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:32:10,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:32:40,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:32:43,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:32:46,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:32:58,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:33:00,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:33:02,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:33:05,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:33:38,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:33:40,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:34:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 12:34:15,256 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2023-02-18 12:34:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-18 12:34:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 24 [2023-02-18 12:34:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 12:34:15,257 INFO L225 Difference]: With dead ends: 99 [2023-02-18 12:34:15,257 INFO L226 Difference]: Without dead ends: 84 [2023-02-18 12:34:15,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 227.4s TimeCoverageRelationStatistics Valid=326, Invalid=1950, Unknown=80, NotChecked=94, Total=2450 [2023-02-18 12:34:15,259 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 138 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 16 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 90.4s IncrementalHoareTripleChecker+Time [2023-02-18 12:34:15,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 123 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 288 Invalid, 29 Unknown, 43 Unchecked, 90.4s Time] [2023-02-18 12:34:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-18 12:34:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2023-02-18 12:34:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 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) [2023-02-18 12:34:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-02-18 12:34:15,273 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 24 [2023-02-18 12:34:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 12:34:15,274 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-02-18 12:34:15,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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) [2023-02-18 12:34:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-02-18 12:34:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 12:34:15,275 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 12:34:15,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 12:34:15,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-18 12:34:15,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:34:15,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 12:34:15,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 12:34:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 4 times [2023-02-18 12:34:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 12:34:15,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822368111] [2023-02-18 12:34:15,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 12:34:15,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 12:34:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 12:34:15,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 12:34:15,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-18 12:34:15,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 12:34:15,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 12:34:15,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 12:34:15,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 12:34:15,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 12:34:15,697 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 25 treesize of output 13 [2023-02-18 12:34:15,789 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 27 treesize of output 15 [2023-02-18 12:34:15,909 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 29 treesize of output 17 [2023-02-18 12:34:16,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:34:16,231 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 1 case distinctions, treesize of input 33 treesize of output 60 [2023-02-18 12:34:16,572 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:34:16,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 80 treesize of output 264 [2023-02-18 12:35:08,700 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 31 treesize of output 30 [2023-02-18 12:35:09,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 12:35:09,891 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 50 treesize of output 27 [2023-02-18 12:35:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:35:10,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 12:36:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 12:36:12,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 12:36:12,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822368111] [2023-02-18 12:36:12,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822368111] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 12:36:12,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 12:36:12,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2023-02-18 12:36:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935271008] [2023-02-18 12:36:12,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 12:36:12,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-18 12:36:12,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 12:36:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-18 12:36:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1055, Unknown=15, NotChecked=0, Total=1260 [2023-02-18 12:36:12,432 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 36 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 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) [2023-02-18 12:36:57,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:36:59,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:01,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:03,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:05,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:07,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-18 12:37:09,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:11,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:13,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:15,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:31,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:34,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:36,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:55,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:57,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:37:59,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-18 12:38:17,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]