./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_security.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/psyco/psyco_security.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 d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 23:18:22,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 23:18:22,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 23:18:22,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 23:18:22,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 23:18:22,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 23:18:22,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 23:18:22,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 23:18:22,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 23:18:22,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 23:18:22,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 23:18:22,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 23:18:22,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 23:18:22,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 23:18:22,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 23:18:22,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 23:18:22,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 23:18:22,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 23:18:22,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 23:18:22,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 23:18:22,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 23:18:22,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 23:18:22,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 23:18:22,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 23:18:22,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 23:18:22,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 23:18:22,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 23:18:22,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 23:18:22,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 23:18:22,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 23:18:22,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:18:22,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:18:22,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:18:22,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:18:22,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:18:22,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:18:22,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:18:22,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:18:22,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:18:22,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:18:22,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:18:22,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 23:18:22,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:18:22,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:18:22,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:18:22,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:18:22,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:18:22,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:18:22,507 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:18:22,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:18:22,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:18:22,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 23:18:22,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:18:22,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:18:22,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:18:22,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:18:22,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:18:22,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:18:22,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:18:22,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:18:22,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:18:22,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:18:22,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:18:22,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:18:22,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:18:22,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:18:22,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:18:22,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:18:22,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 23:18:22,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 23:18:22,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:18:22,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:18:22,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb [2021-08-25 23:18:22,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:18:22,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:18:22,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:18:22,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:18:22,853 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:18:22,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_security.c [2021-08-25 23:18:22,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d907eb6e/1eeba22472834c26990113944d70dc20/FLAG45b7074eb [2021-08-25 23:18:23,380 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:18:23,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_security.c [2021-08-25 23:18:23,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d907eb6e/1eeba22472834c26990113944d70dc20/FLAG45b7074eb [2021-08-25 23:18:23,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d907eb6e/1eeba22472834c26990113944d70dc20 [2021-08-25 23:18:23,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:18:23,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:18:23,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:18:23,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:18:23,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:18:23,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:18:23" (1/1) ... [2021-08-25 23:18:23,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583a9934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:23, skipping insertion in model container [2021-08-25 23:18:23,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:18:23" (1/1) ... [2021-08-25 23:18:23,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:18:23,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:18:23,999 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-08-25 23:18:24,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:18:24,010 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:18:24,034 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-08-25 23:18:24,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:18:24,055 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:18:24,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24 WrapperNode [2021-08-25 23:18:24,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:18:24,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:18:24,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:18:24,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:18:24,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:18:24,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:18:24,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:18:24,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:18:24,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:18:24,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:18:24,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:18:24,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:18:24,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:18:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:18:24,198 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) [2021-08-25 23:18:24,222 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 [2021-08-25 23:18:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:18:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 23:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:18:24,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:18:24,711 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-25 23:18:24,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:18:24 BoogieIcfgContainer [2021-08-25 23:18:24,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:18:24,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:18:24,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:18:24,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:18:24,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:18:23" (1/3) ... [2021-08-25 23:18:24,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be78b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:18:24, skipping insertion in model container [2021-08-25 23:18:24,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (2/3) ... [2021-08-25 23:18:24,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be78b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:18:24, skipping insertion in model container [2021-08-25 23:18:24,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:18:24" (3/3) ... [2021-08-25 23:18:24,719 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2021-08-25 23:18:24,722 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:18:24,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:18:24,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:18:24,764 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 23:18:24,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:18:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 77 states have internal predecessors, (147), 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) [2021-08-25 23:18:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-25 23:18:24,782 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:24,782 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:24,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash 352571364, now seen corresponding path program 1 times [2021-08-25 23:18:24,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:24,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214315699] [2021-08-25 23:18:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:24,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:24,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:24,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214315699] [2021-08-25 23:18:24,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214315699] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:24,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:24,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 23:18:24,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460079350] [2021-08-25 23:18:24,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:18:24,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:18:24,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:18:24,936 INFO L87 Difference]: Start difference. First operand has 78 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 77 states have internal predecessors, (147), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:24,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:24,955 INFO L93 Difference]: Finished difference Result 154 states and 292 transitions. [2021-08-25 23:18:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:18:24,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-25 23:18:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:24,964 INFO L225 Difference]: With dead ends: 154 [2021-08-25 23:18:24,964 INFO L226 Difference]: Without dead ends: 74 [2021-08-25 23:18:24,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:18:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-25 23:18:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-08-25 23:18:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 73 states have internal predecessors, (109), 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) [2021-08-25 23:18:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2021-08-25 23:18:24,995 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 109 transitions. Word has length 9 [2021-08-25 23:18:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:24,996 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-08-25 23:18:24,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 109 transitions. [2021-08-25 23:18:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-25 23:18:24,997 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:24,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:24,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 23:18:24,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:24,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697708, now seen corresponding path program 1 times [2021-08-25 23:18:24,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:24,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343707850] [2021-08-25 23:18:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:24,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:25,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:25,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343707850] [2021-08-25 23:18:25,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343707850] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:25,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:25,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:25,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883692192] [2021-08-25 23:18:25,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:25,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,049 INFO L87 Difference]: Start difference. First operand 74 states and 109 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-25 23:18:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:25,113 INFO L93 Difference]: Finished difference Result 149 states and 220 transitions. [2021-08-25 23:18:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-25 23:18:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:25,115 INFO L225 Difference]: With dead ends: 149 [2021-08-25 23:18:25,115 INFO L226 Difference]: Without dead ends: 77 [2021-08-25 23:18:25,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-25 23:18:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-08-25 23:18:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 76 states have internal predecessors, (112), 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) [2021-08-25 23:18:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 112 transitions. [2021-08-25 23:18:25,134 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 112 transitions. Word has length 10 [2021-08-25 23:18:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:25,134 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 112 transitions. [2021-08-25 23:18:25,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-25 23:18:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 112 transitions. [2021-08-25 23:18:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-25 23:18:25,135 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:25,135 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:25,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 23:18:25,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash 658032583, now seen corresponding path program 1 times [2021-08-25 23:18:25,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:25,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711662623] [2021-08-25 23:18:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:25,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:25,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:25,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711662623] [2021-08-25 23:18:25,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711662623] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:25,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:25,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:25,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816173266] [2021-08-25 23:18:25,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:25,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,184 INFO L87 Difference]: Start difference. First operand 77 states and 112 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-08-25 23:18:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:25,248 INFO L93 Difference]: Finished difference Result 157 states and 229 transitions. [2021-08-25 23:18:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:25,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-08-25 23:18:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:25,250 INFO L225 Difference]: With dead ends: 157 [2021-08-25 23:18:25,250 INFO L226 Difference]: Without dead ends: 83 [2021-08-25 23:18:25,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-25 23:18:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-08-25 23:18:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.45) internal successors, (116), 80 states have internal predecessors, (116), 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) [2021-08-25 23:18:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2021-08-25 23:18:25,257 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 15 [2021-08-25 23:18:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:25,258 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2021-08-25 23:18:25,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-08-25 23:18:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2021-08-25 23:18:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-25 23:18:25,259 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:25,259 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:25,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 23:18:25,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:25,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2066489199, now seen corresponding path program 1 times [2021-08-25 23:18:25,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:25,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402124090] [2021-08-25 23:18:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:25,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:25,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:25,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402124090] [2021-08-25 23:18:25,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402124090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:25,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:25,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 23:18:25,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044801164] [2021-08-25 23:18:25,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 23:18:25,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 23:18:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:18:25,324 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:25,621 INFO L93 Difference]: Finished difference Result 254 states and 362 transitions. [2021-08-25 23:18:25,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 23:18:25,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-25 23:18:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:25,628 INFO L225 Difference]: With dead ends: 254 [2021-08-25 23:18:25,628 INFO L226 Difference]: Without dead ends: 164 [2021-08-25 23:18:25,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:18:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-08-25 23:18:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2021-08-25 23:18:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.515625) internal successors, (194), 128 states have internal predecessors, (194), 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) [2021-08-25 23:18:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2021-08-25 23:18:25,655 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 18 [2021-08-25 23:18:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:25,656 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2021-08-25 23:18:25,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2021-08-25 23:18:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-25 23:18:25,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:25,658 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:25,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 23:18:25,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:25,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1261026174, now seen corresponding path program 1 times [2021-08-25 23:18:25,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:25,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807667193] [2021-08-25 23:18:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:25,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:18:25,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:25,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807667193] [2021-08-25 23:18:25,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807667193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:25,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:25,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:25,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223457640] [2021-08-25 23:18:25,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:25,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,732 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-08-25 23:18:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:25,792 INFO L93 Difference]: Finished difference Result 219 states and 335 transitions. [2021-08-25 23:18:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:25,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) Word has length 22 [2021-08-25 23:18:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:25,793 INFO L225 Difference]: With dead ends: 219 [2021-08-25 23:18:25,794 INFO L226 Difference]: Without dead ends: 93 [2021-08-25 23:18:25,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-25 23:18:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-08-25 23:18:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.5) internal successors, (138), 92 states have internal predecessors, (138), 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) [2021-08-25 23:18:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2021-08-25 23:18:25,800 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 22 [2021-08-25 23:18:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:25,801 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2021-08-25 23:18:25,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-08-25 23:18:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2021-08-25 23:18:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-25 23:18:25,802 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:25,802 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:25,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 23:18:25,802 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:25,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1712893632, now seen corresponding path program 1 times [2021-08-25 23:18:25,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:25,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628874504] [2021-08-25 23:18:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:25,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:18:25,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:25,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628874504] [2021-08-25 23:18:25,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628874504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:25,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:25,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:25,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286920092] [2021-08-25 23:18:25,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:25,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,842 INFO L87 Difference]: Start difference. First operand 93 states and 138 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-08-25 23:18:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:25,931 INFO L93 Difference]: Finished difference Result 179 states and 266 transitions. [2021-08-25 23:18:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:25,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 26 [2021-08-25 23:18:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:25,934 INFO L225 Difference]: With dead ends: 179 [2021-08-25 23:18:25,934 INFO L226 Difference]: Without dead ends: 105 [2021-08-25 23:18:25,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-08-25 23:18:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2021-08-25 23:18:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 94 states have internal predecessors, (132), 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) [2021-08-25 23:18:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2021-08-25 23:18:25,956 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 26 [2021-08-25 23:18:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:25,956 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2021-08-25 23:18:25,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-08-25 23:18:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2021-08-25 23:18:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-25 23:18:25,959 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:25,960 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:25,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 23:18:25,960 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:25,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:25,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1584038971, now seen corresponding path program 1 times [2021-08-25 23:18:25,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:25,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529611247] [2021-08-25 23:18:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:25,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:18:26,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:26,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529611247] [2021-08-25 23:18:26,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529611247] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:26,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:26,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:26,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889009455] [2021-08-25 23:18:26,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:26,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:26,019 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:26,058 INFO L93 Difference]: Finished difference Result 162 states and 225 transitions. [2021-08-25 23:18:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:26,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-25 23:18:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:26,059 INFO L225 Difference]: With dead ends: 162 [2021-08-25 23:18:26,059 INFO L226 Difference]: Without dead ends: 88 [2021-08-25 23:18:26,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-25 23:18:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-08-25 23:18:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3218390804597702) internal successors, (115), 87 states have internal predecessors, (115), 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) [2021-08-25 23:18:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2021-08-25 23:18:26,064 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 27 [2021-08-25 23:18:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:26,064 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2021-08-25 23:18:26,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2021-08-25 23:18:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-25 23:18:26,065 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:26,065 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:26,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-25 23:18:26,065 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1447684816, now seen corresponding path program 1 times [2021-08-25 23:18:26,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:26,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484152526] [2021-08-25 23:18:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:26,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:18:26,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:26,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484152526] [2021-08-25 23:18:26,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484152526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:26,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:26,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:26,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040913918] [2021-08-25 23:18:26,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:26,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:26,105 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:26,145 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2021-08-25 23:18:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-25 23:18:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:26,146 INFO L225 Difference]: With dead ends: 133 [2021-08-25 23:18:26,147 INFO L226 Difference]: Without dead ends: 66 [2021-08-25 23:18:26,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:26,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-25 23:18:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-08-25 23:18:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 65 states have internal predecessors, (84), 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) [2021-08-25 23:18:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2021-08-25 23:18:26,150 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 27 [2021-08-25 23:18:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:26,151 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2021-08-25 23:18:26,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2021-08-25 23:18:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-25 23:18:26,152 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:26,152 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:26,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-25 23:18:26,152 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash -583473182, now seen corresponding path program 1 times [2021-08-25 23:18:26,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:26,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578406573] [2021-08-25 23:18:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:26,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:18:26,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:26,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578406573] [2021-08-25 23:18:26,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578406573] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:26,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:26,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:26,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836053190] [2021-08-25 23:18:26,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:26,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:26,182 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-08-25 23:18:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:26,207 INFO L93 Difference]: Finished difference Result 107 states and 139 transitions. [2021-08-25 23:18:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:26,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 29 [2021-08-25 23:18:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:26,211 INFO L225 Difference]: With dead ends: 107 [2021-08-25 23:18:26,211 INFO L226 Difference]: Without dead ends: 0 [2021-08-25 23:18:26,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-25 23:18:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-25 23:18:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-25 23:18:26,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-08-25 23:18:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:26,217 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-25 23:18:26,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-08-25 23:18:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-25 23:18:26,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-25 23:18:26,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:18:26,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-25 23:18:26,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-25 23:18:26,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 23:18:26,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 23:18:26,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 23:18:26,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L250(lines 250 265) no Hoare annotation was computed. [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 133) no Hoare annotation was computed. [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 63) no Hoare annotation was computed. [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 381) no Hoare annotation was computed. [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 249) no Hoare annotation was computed. [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L168(lines 168 179) no Hoare annotation was computed. [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 117) no Hoare annotation was computed. [2021-08-25 23:18:26,302 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L853 garLoopResultBuilder]: At program point L383(lines 24 387) the Hoare annotation is: (or (and (= 2 ULTIMATE.start_main_~this_state~0) (= ULTIMATE.start_main_~q~0 3)) (and (= 3 ULTIMATE.start_main_~this_state~0) (<= 4 ULTIMATE.start_main_~q~0)) (= ULTIMATE.start_main_~q~0 0) (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~this_state~0 0))) [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 365) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 233) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 284) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 163) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 349) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 279) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 217) no Hoare annotation was computed. [2021-08-25 23:18:26,303 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 147) no Hoare annotation was computed. [2021-08-25 23:18:26,304 INFO L857 garLoopResultBuilder]: For program point L318(lines 318 333) no Hoare annotation was computed. [2021-08-25 23:18:26,304 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 384) no Hoare annotation was computed. [2021-08-25 23:18:26,304 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 263) no Hoare annotation was computed. [2021-08-25 23:18:26,304 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 201) no Hoare annotation was computed. [2021-08-25 23:18:26,304 INFO L857 garLoopResultBuilder]: For program point L120(lines 120 131) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L368(lines 368 379) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 317) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L236(lines 236 247) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L352(lines 352 363) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 301) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L220(lines 220 231) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2021-08-25 23:18:26,306 INFO L857 garLoopResultBuilder]: For program point L336(lines 336 347) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 215) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 74) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L320(lines 320 331) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 199) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 58) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 315) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 174) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 299) no Hoare annotation was computed. [2021-08-25 23:18:26,307 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 158) no Hoare annotation was computed. [2021-08-25 23:18:26,308 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (and (= 3 ULTIMATE.start_main_~this_state~0) (<= 4 ULTIMATE.start_main_~q~0)) (and (not (= 2 ULTIMATE.start_main_~this_state~0)) (= ULTIMATE.start_main_~q~0 0))) [2021-08-25 23:18:26,308 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2021-08-25 23:18:26,308 INFO L857 garLoopResultBuilder]: For program point L272(lines 272 274) no Hoare annotation was computed. [2021-08-25 23:18:26,308 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 142) no Hoare annotation was computed. [2021-08-25 23:18:26,308 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-25 23:18:26,308 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 258) no Hoare annotation was computed. [2021-08-25 23:18:26,308 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-08-25 23:18:26,308 INFO L857 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2021-08-25 23:18:26,309 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 242) no Hoare annotation was computed. [2021-08-25 23:18:26,309 INFO L857 garLoopResultBuilder]: For program point L108(lines 108 110) no Hoare annotation was computed. [2021-08-25 23:18:26,309 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 358) no Hoare annotation was computed. [2021-08-25 23:18:26,309 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 226) no Hoare annotation was computed. [2021-08-25 23:18:26,309 INFO L853 garLoopResultBuilder]: At program point L373(lines 15 392) the Hoare annotation is: false [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point L340(lines 340 342) no Hoare annotation was computed. [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 210) no Hoare annotation was computed. [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 326) no Hoare annotation was computed. [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point L192(lines 192 194) no Hoare annotation was computed. [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 310) no Hoare annotation was computed. [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-25 23:18:26,310 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2021-08-25 23:18:26,311 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 45) no Hoare annotation was computed. [2021-08-25 23:18:26,311 INFO L860 garLoopResultBuilder]: At program point L15(lines 15 392) the Hoare annotation is: true [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 97) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 100) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 65) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 181) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 165) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 95) no Hoare annotation was computed. [2021-08-25 23:18:26,312 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 281) no Hoare annotation was computed. [2021-08-25 23:18:26,313 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 149) no Hoare annotation was computed. [2021-08-25 23:18:26,313 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 184) no Hoare annotation was computed. [2021-08-25 23:18:26,313 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 79) no Hoare annotation was computed. [2021-08-25 23:18:26,316 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:18:26,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:18:26 BoogieIcfgContainer [2021-08-25 23:18:26,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:18:26,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:18:26,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:18:26,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:18:26,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:18:24" (3/4) ... [2021-08-25 23:18:26,337 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-25 23:18:26,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-25 23:18:26,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-25 23:18:26,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 23:18:26,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 23:18:26,386 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 23:18:26,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:18:26,387 INFO L168 Benchmark]: Toolchain (without parser) took 2573.82 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 31.5 MB in the beginning and 62.4 MB in the end (delta: -31.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-08-25 23:18:26,388 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:18:26,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.28 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 33.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-08-25 23:18:26,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.32 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 31.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:18:26,389 INFO L168 Benchmark]: Boogie Preprocessor took 43.93 ms. Allocated memory is still 54.5 MB. Free memory was 31.2 MB in the beginning and 29.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:18:26,389 INFO L168 Benchmark]: RCFGBuilder took 547.83 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.6 MB in the beginning and 43.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-08-25 23:18:26,390 INFO L168 Benchmark]: TraceAbstraction took 1619.67 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.5 MB in the beginning and 29.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-08-25 23:18:26,390 INFO L168 Benchmark]: Witness Printer took 52.48 ms. Allocated memory is still 81.8 MB. Free memory was 29.1 MB in the beginning and 62.4 MB in the end (delta: -33.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:18:26,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.28 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 33.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.32 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 31.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.93 ms. Allocated memory is still 54.5 MB. Free memory was 31.2 MB in the beginning and 29.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 547.83 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.6 MB in the beginning and 43.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1619.67 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.5 MB in the beginning and 29.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 52.48 ms. Allocated memory is still 81.8 MB. Free memory was 29.1 MB in the beginning and 62.4 MB in the end (delta: -33.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1559.3ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 16.6ms, AutomataDifference: 761.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 80.3ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 880 SDtfs, 271 SDslu, 515 SDs, 0 SdLazy, 271 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 413.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 95.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 43 HoareAnnotationTreeSize, 4 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 18.9ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 54.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 106.0ms SatisfiabilityAnalysisTime, 295.4ms InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 43/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((2 == this_state && q == 3) || (3 == this_state && 4 <= q)) || q == 0) || (q == 2 && this_state == 0) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (3 == this_state && 4 <= q) || (!(2 == this_state) && q == 0) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-25 23:18:26,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...