./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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_io_1.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 0e42a14d02446d341c51d21bb42c9bd175f1ebef ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-04 22:11:16,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 22:11:16,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 22:11:16,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 22:11:16,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 22:11:16,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 22:11:16,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 22:11:16,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 22:11:16,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 22:11:16,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 22:11:16,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 22:11:16,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 22:11:16,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 22:11:16,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 22:11:16,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 22:11:16,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 22:11:16,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 22:11:16,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 22:11:16,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 22:11:16,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 22:11:16,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 22:11:16,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 22:11:16,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 22:11:16,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 22:11:16,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 22:11:16,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 22:11:16,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 22:11:16,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 22:11:16,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 22:11:16,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 22:11:16,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 22:11:16,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 22:11:16,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 22:11:16,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 22:11:16,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 22:11:16,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 22:11:16,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 22:11:16,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 22:11:16,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 22:11:16,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 22:11:16,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 22:11:16,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 22:11:16,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 22:11:16,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 22:11:16,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 22:11:16,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 22:11:16,850 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 22:11:16,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 22:11:16,850 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 22:11:16,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 22:11:16,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 22:11:16,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 22:11:16,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 22:11:16,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 22:11:16,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 22:11:16,853 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 22:11:16,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 22:11:16,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 22:11:16,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 22:11:16,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 22:11:16,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 22:11:16,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 22:11:16,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 22:11:16,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 22:11:16,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 22:11:16,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 22:11:16,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 22:11:16,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 22:11:16,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 22:11:16,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 22:11:16,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e42a14d02446d341c51d21bb42c9bd175f1ebef [2021-07-04 22:11:17,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 22:11:17,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 22:11:17,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 22:11:17,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 22:11:17,186 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 22:11:17,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_io_1.c [2021-07-04 22:11:17,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61c88272/bf0d0fb0e6004eafbfb1321f2cadbc94/FLAG3ba401f06 [2021-07-04 22:11:17,629 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 22:11:17,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c [2021-07-04 22:11:17,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61c88272/bf0d0fb0e6004eafbfb1321f2cadbc94/FLAG3ba401f06 [2021-07-04 22:11:18,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61c88272/bf0d0fb0e6004eafbfb1321f2cadbc94 [2021-07-04 22:11:18,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 22:11:18,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 22:11:18,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 22:11:18,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 22:11:18,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 22:11:18,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88b96d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18, skipping insertion in model container [2021-07-04 22:11:18,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 22:11:18,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 22:11:18,228 WARN L224 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_io_1.c[11478,11491] [2021-07-04 22:11:18,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 22:11:18,238 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 22:11:18,295 WARN L224 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_io_1.c[11478,11491] [2021-07-04 22:11:18,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 22:11:18,322 INFO L208 MainTranslator]: Completed translation [2021-07-04 22:11:18,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18 WrapperNode [2021-07-04 22:11:18,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 22:11:18,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 22:11:18,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 22:11:18,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 22:11:18,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 22:11:18,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 22:11:18,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 22:11:18,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 22:11:18,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 22:11:18,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 22:11:18,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 22:11:18,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 22:11:18,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (1/1) ... [2021-07-04 22:11:18,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 22:11:18,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 22:11:18,464 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) [2021-07-04 22:11:18,488 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 [2021-07-04 22:11:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 22:11:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 22:11:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 22:11:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 22:11:18,897 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 22:11:18,897 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-07-04 22:11:18,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:11:18 BoogieIcfgContainer [2021-07-04 22:11:18,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 22:11:18,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 22:11:18,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 22:11:18,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 22:11:18,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 10:11:18" (1/3) ... [2021-07-04 22:11:18,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cac77d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 10:11:18, skipping insertion in model container [2021-07-04 22:11:18,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:11:18" (2/3) ... [2021-07-04 22:11:18,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cac77d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 10:11:18, skipping insertion in model container [2021-07-04 22:11:18,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:11:18" (3/3) ... [2021-07-04 22:11:18,907 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2021-07-04 22:11:18,918 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 22:11:18,919 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 22:11:18,955 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 22:11:18,960 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 22:11:18,960 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 22:11:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 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) [2021-07-04 22:11:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-04 22:11:18,985 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:11:18,985 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 22:11:18,986 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:11:18,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:11:18,991 INFO L82 PathProgramCache]: Analyzing trace with hash 352571312, now seen corresponding path program 1 times [2021-07-04 22:11:18,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 22:11:18,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514913390] [2021-07-04 22:11:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:11:18,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 22:11:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 22:11:19,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 22:11:19,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 22:11:19,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514913390] [2021-07-04 22:11:19,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514913390] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 22:11:19,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 22:11:19,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-04 22:11:19,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36997923] [2021-07-04 22:11:19,170 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-04 22:11:19,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 22:11:19,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-04 22:11:19,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-04 22:11:19,187 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 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) [2021-07-04 22:11:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 22:11:19,213 INFO L93 Difference]: Finished difference Result 130 states and 244 transitions. [2021-07-04 22:11:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-04 22:11:19,215 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 [2021-07-04 22:11:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 22:11:19,222 INFO L225 Difference]: With dead ends: 130 [2021-07-04 22:11:19,222 INFO L226 Difference]: Without dead ends: 57 [2021-07-04 22:11:19,225 INFO L795 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 [2021-07-04 22:11:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-07-04 22:11:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-07-04 22:11:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 56 states have internal predecessors, (87), 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) [2021-07-04 22:11:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2021-07-04 22:11:19,258 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2021-07-04 22:11:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 22:11:19,259 INFO L442 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2021-07-04 22:11:19,259 INFO L443 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) [2021-07-04 22:11:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2021-07-04 22:11:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-04 22:11:19,260 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:11:19,260 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 22:11:19,260 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 22:11:19,261 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:11:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:11:19,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697760, now seen corresponding path program 1 times [2021-07-04 22:11:19,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 22:11:19,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664463297] [2021-07-04 22:11:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:11:19,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 22:11:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 22:11:19,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:11:19,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 22:11:19,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 22:11:19,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664463297] [2021-07-04 22:11:19,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664463297] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 22:11:19,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 22:11:19,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 22:11:19,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970488303] [2021-07-04 22:11:19,323 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 22:11:19,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 22:11:19,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 22:11:19,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 22:11:19,324 INFO L87 Difference]: Start difference. First operand 57 states and 87 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) [2021-07-04 22:11:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 22:11:19,351 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2021-07-04 22:11:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 22:11:19,352 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 [2021-07-04 22:11:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 22:11:19,353 INFO L225 Difference]: With dead ends: 115 [2021-07-04 22:11:19,353 INFO L226 Difference]: Without dead ends: 60 [2021-07-04 22:11:19,354 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 22:11:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-07-04 22:11:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-07-04 22:11:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 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) [2021-07-04 22:11:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2021-07-04 22:11:19,360 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 10 [2021-07-04 22:11:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 22:11:19,360 INFO L442 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2021-07-04 22:11:19,361 INFO L443 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) [2021-07-04 22:11:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2021-07-04 22:11:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-04 22:11:19,362 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:11:19,362 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 22:11:19,362 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-04 22:11:19,362 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:11:19,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:11:19,363 INFO L82 PathProgramCache]: Analyzing trace with hash 658032531, now seen corresponding path program 1 times [2021-07-04 22:11:19,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 22:11:19,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664221944] [2021-07-04 22:11:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:11:19,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 22:11:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 22:11:19,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:11:19,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 22:11:19,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 22:11:19,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664221944] [2021-07-04 22:11:19,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664221944] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 22:11:19,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 22:11:19,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 22:11:19,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218042520] [2021-07-04 22:11:19,402 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 22:11:19,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 22:11:19,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 22:11:19,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 22:11:19,403 INFO L87 Difference]: Start difference. First operand 60 states and 90 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) [2021-07-04 22:11:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 22:11:19,438 INFO L93 Difference]: Finished difference Result 123 states and 185 transitions. [2021-07-04 22:11:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 22:11:19,438 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 [2021-07-04 22:11:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 22:11:19,439 INFO L225 Difference]: With dead ends: 123 [2021-07-04 22:11:19,439 INFO L226 Difference]: Without dead ends: 66 [2021-07-04 22:11:19,440 INFO L795 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 [2021-07-04 22:11:19,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-07-04 22:11:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-07-04 22:11:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 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) [2021-07-04 22:11:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2021-07-04 22:11:19,451 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 15 [2021-07-04 22:11:19,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 22:11:19,452 INFO L442 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2021-07-04 22:11:19,452 INFO L443 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) [2021-07-04 22:11:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2021-07-04 22:11:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-04 22:11:19,453 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:11:19,453 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 22:11:19,454 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-04 22:11:19,454 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:11:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:11:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2017993163, now seen corresponding path program 1 times [2021-07-04 22:11:19,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 22:11:19,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007664069] [2021-07-04 22:11:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:11:19,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 22:11:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 22:11:19,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:11:19,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 22:11:19,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 22:11:19,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007664069] [2021-07-04 22:11:19,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007664069] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 22:11:19,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 22:11:19,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 22:11:19,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963979937] [2021-07-04 22:11:19,517 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 22:11:19,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 22:11:19,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 22:11:19,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 22:11:19,518 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-07-04 22:11:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 22:11:19,587 INFO L93 Difference]: Finished difference Result 182 states and 272 transitions. [2021-07-04 22:11:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 22:11:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-07-04 22:11:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 22:11:19,589 INFO L225 Difference]: With dead ends: 182 [2021-07-04 22:11:19,589 INFO L226 Difference]: Without dead ends: 117 [2021-07-04 22:11:19,589 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 22:11:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-07-04 22:11:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2021-07-04 22:11:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.4953271028037383) internal successors, (160), 107 states have internal predecessors, (160), 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) [2021-07-04 22:11:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2021-07-04 22:11:19,597 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 20 [2021-07-04 22:11:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 22:11:19,598 INFO L442 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2021-07-04 22:11:19,598 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-07-04 22:11:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2021-07-04 22:11:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-04 22:11:19,599 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:11:19,599 INFO L525 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 22:11:19,599 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-04 22:11:19,599 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:11:19,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:11:19,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1713693363, now seen corresponding path program 1 times [2021-07-04 22:11:19,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 22:11:19,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774628813] [2021-07-04 22:11:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:11:19,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 22:11:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 22:11:19,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:11:19,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-04 22:11:19,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 22:11:19,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774628813] [2021-07-04 22:11:19,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774628813] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 22:11:19,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 22:11:19,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 22:11:19,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770160514] [2021-07-04 22:11:19,674 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 22:11:19,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 22:11:19,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 22:11:19,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 22:11:19,677 INFO L87 Difference]: Start difference. First operand 108 states and 160 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) [2021-07-04 22:11:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 22:11:19,709 INFO L93 Difference]: Finished difference Result 178 states and 264 transitions. [2021-07-04 22:11:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 22:11:19,709 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 [2021-07-04 22:11:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 22:11:19,712 INFO L225 Difference]: With dead ends: 178 [2021-07-04 22:11:19,713 INFO L226 Difference]: Without dead ends: 73 [2021-07-04 22:11:19,715 INFO L795 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 [2021-07-04 22:11:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-07-04 22:11:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-07-04 22:11:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 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) [2021-07-04 22:11:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-07-04 22:11:19,729 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 27 [2021-07-04 22:11:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 22:11:19,731 INFO L442 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-07-04 22:11:19,731 INFO L443 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) [2021-07-04 22:11:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2021-07-04 22:11:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-04 22:11:19,732 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:11:19,732 INFO L525 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, 1, 1, 1, 1] [2021-07-04 22:11:19,732 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-04 22:11:19,732 INFO L374 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:11:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:11:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1521721792, now seen corresponding path program 1 times [2021-07-04 22:11:19,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 22:11:19,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64618605] [2021-07-04 22:11:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:11:19,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 22:11:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 22:11:19,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 22:11:19,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 22:11:19,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:11:19,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:11:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-04 22:11:19,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 22:11:19,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64618605] [2021-07-04 22:11:19,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64618605] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 22:11:19,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 22:11:19,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-04 22:11:19,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112145129] [2021-07-04 22:11:19,822 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-04 22:11:19,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 22:11:19,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-04 22:11:19,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-04 22:11:19,824 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-07-04 22:11:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 22:11:19,909 INFO L93 Difference]: Finished difference Result 76 states and 104 transitions. [2021-07-04 22:11:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-04 22:11:19,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 33 [2021-07-04 22:11:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 22:11:19,910 INFO L225 Difference]: With dead ends: 76 [2021-07-04 22:11:19,911 INFO L226 Difference]: Without dead ends: 0 [2021-07-04 22:11:19,911 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-04 22:11:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-04 22:11:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-04 22:11:19,912 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) [2021-07-04 22:11:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-04 22:11:19,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-07-04 22:11:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 22:11:19,912 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-04 22:11:19,913 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-07-04 22:11:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-04 22:11:19,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-04 22:11:19,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-04 22:11:19,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-04 22:11:19,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-04 22:11:19,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-04 22:11:19,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-04 22:11:19,950 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2021-07-04 22:11:19,951 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-04 22:11:19,951 INFO L762 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-07-04 22:11:19,951 INFO L762 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2021-07-04 22:11:19,951 INFO L762 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2021-07-04 22:11:19,951 INFO L762 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2021-07-04 22:11:19,952 INFO L762 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2021-07-04 22:11:19,952 INFO L762 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2021-07-04 22:11:19,952 INFO L762 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2021-07-04 22:11:19,952 INFO L762 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2021-07-04 22:11:19,952 INFO L758 garLoopResultBuilder]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (= ULTIMATE.start_main_~q~0 0) (and (not .cse0) (<= 3 ULTIMATE.start_main_~q~0)) (and .cse0 (= ULTIMATE.start_main_~q~0 2)))) [2021-07-04 22:11:19,953 INFO L762 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2021-07-04 22:11:19,953 INFO L762 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2021-07-04 22:11:19,953 INFO L762 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2021-07-04 22:11:19,953 INFO L762 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2021-07-04 22:11:19,953 INFO L762 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2021-07-04 22:11:19,953 INFO L762 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2021-07-04 22:11:19,954 INFO L762 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2021-07-04 22:11:19,954 INFO L762 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2021-07-04 22:11:19,954 INFO L762 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2021-07-04 22:11:19,954 INFO L762 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2021-07-04 22:11:19,954 INFO L762 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2021-07-04 22:11:19,954 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-04 22:11:19,955 INFO L762 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2021-07-04 22:11:19,955 INFO L762 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2021-07-04 22:11:19,955 INFO L762 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2021-07-04 22:11:19,955 INFO L762 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2021-07-04 22:11:19,955 INFO L762 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2021-07-04 22:11:19,955 INFO L758 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (and .cse0 (= ULTIMATE.start_main_~q~0 0)) (and (not .cse0) (<= 3 ULTIMATE.start_main_~q~0)))) [2021-07-04 22:11:19,956 INFO L762 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2021-07-04 22:11:19,956 INFO L762 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2021-07-04 22:11:19,956 INFO L762 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2021-07-04 22:11:19,956 INFO L762 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2021-07-04 22:11:19,956 INFO L762 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2021-07-04 22:11:19,956 INFO L762 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-07-04 22:11:19,957 INFO L762 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2021-07-04 22:11:19,957 INFO L762 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2021-07-04 22:11:19,957 INFO L762 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2021-07-04 22:11:19,957 INFO L762 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2021-07-04 22:11:19,957 INFO L762 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2021-07-04 22:11:19,957 INFO L762 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2021-07-04 22:11:19,958 INFO L762 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2021-07-04 22:11:19,958 INFO L762 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2021-07-04 22:11:19,958 INFO L762 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2021-07-04 22:11:19,958 INFO L762 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2021-07-04 22:11:19,958 INFO L762 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2021-07-04 22:11:19,958 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-04 22:11:19,959 INFO L762 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2021-07-04 22:11:19,959 INFO L762 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-07-04 22:11:19,959 INFO L762 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2021-07-04 22:11:19,959 INFO L762 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2021-07-04 22:11:19,959 INFO L762 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2021-07-04 22:11:19,959 INFO L762 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2021-07-04 22:11:19,960 INFO L762 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2021-07-04 22:11:19,960 INFO L758 garLoopResultBuilder]: At program point L327(lines 15 346) the Hoare annotation is: false [2021-07-04 22:11:19,960 INFO L762 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2021-07-04 22:11:19,960 INFO L762 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2021-07-04 22:11:19,960 INFO L762 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2021-07-04 22:11:19,960 INFO L762 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2021-07-04 22:11:19,961 INFO L762 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2021-07-04 22:11:19,961 INFO L762 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2021-07-04 22:11:19,961 INFO L762 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2021-07-04 22:11:19,961 INFO L762 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2021-07-04 22:11:19,961 INFO L765 garLoopResultBuilder]: At program point L15(lines 15 346) the Hoare annotation is: true [2021-07-04 22:11:19,961 INFO L762 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2021-07-04 22:11:19,962 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-04 22:11:19,962 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-07-04 22:11:19,962 INFO L762 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2021-07-04 22:11:19,962 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-04 22:11:19,962 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 22:11:19,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 10:11:19 BoogieIcfgContainer [2021-07-04 22:11:19,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 22:11:19,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 22:11:19,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 22:11:19,981 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 22:11:19,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:11:18" (3/4) ... [2021-07-04 22:11:19,984 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-04 22:11:20,003 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-07-04 22:11:20,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-04 22:11:20,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-04 22:11:20,009 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-04 22:11:20,036 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 22:11:20,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 22:11:20,039 INFO L168 Benchmark]: Toolchain (without parser) took 2012.90 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 44.9 MB in the beginning and 36.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-07-04 22:11:20,039 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:11:20,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.60 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 47.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-04 22:11:20,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.44 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 45.6 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:11:20,040 INFO L168 Benchmark]: Boogie Preprocessor took 53.94 ms. Allocated memory is still 65.0 MB. Free memory was 45.6 MB in the beginning and 43.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 22:11:20,041 INFO L168 Benchmark]: RCFGBuilder took 459.83 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 43.9 MB in the beginning and 48.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-07-04 22:11:20,042 INFO L168 Benchmark]: TraceAbstraction took 1080.06 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 39.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-07-04 22:11:20,042 INFO L168 Benchmark]: Witness Printer took 56.00 ms. Allocated memory is still 79.7 MB. Free memory was 39.4 MB in the beginning and 36.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-04 22:11:20,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.60 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 47.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.44 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 45.6 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.94 ms. Allocated memory is still 65.0 MB. Free memory was 45.6 MB in the beginning and 43.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 459.83 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 43.9 MB in the beginning and 48.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1080.06 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 39.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 56.00 ms. Allocated memory is still 79.7 MB. Free memory was 39.4 MB in the beginning and 36.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 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: 345]: 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 for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1012.9ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 20.4ms, AutomataDifference: 324.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 34.4ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 515 SDtfs, 140 SDslu, 283 SDs, 0 SdLazy, 83 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 61.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 37 HoareAnnotationTreeSize, 4 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 10.3ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 18.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 17.5ms SsaConstructionTime, 152.0ms SatisfiabilityAnalysisTime, 233.4ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 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: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (this_sink == 0 && q == 0) || (!(this_sink == 0) && 3 <= q) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 || (!(this_sink == 0) && 3 <= q)) || (this_sink == 0 && q == 2) RESULT: Ultimate proved your program to be correct! [2021-07-04 22:11:20,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...