./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/cggmp2005_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/cggmp2005_variant.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53bb793d04b8582ac13d1842856082c93ca272cf .................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:00:45,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:00:45,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:00:45,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:00:45,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:00:45,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:00:45,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:00:45,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:00:45,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:00:45,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:00:45,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:00:45,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:00:45,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:00:45,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:00:45,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:00:45,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:00:45,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:00:45,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:00:45,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:00:45,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:00:45,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:00:45,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:00:45,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:00:45,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:00:45,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:00:45,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:00:45,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:00:45,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:00:45,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:00:45,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:00:45,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:00:45,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:00:45,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:00:45,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:00:45,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:00:45,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:00:45,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:00:45,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:00:45,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:00:45,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:00:45,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:00:45,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:00:45,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:00:45,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:00:45,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:00:45,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:00:45,998 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:00:45,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:00:45,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:00:45,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:00:45,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:00:45,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:00:46,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:00:46,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:00:46,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:00:46,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:00:46,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:00:46,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:00:46,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:00:46,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:00:46,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:00:46,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:00:46,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:00:46,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:00:46,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:00:46,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:00:46,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:00:46,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:00:46,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:00:46,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:00:46,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:00:46,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 53bb793d04b8582ac13d1842856082c93ca272cf [2020-10-20 01:00:46,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:00:46,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:00:46,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:00:46,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:00:46,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:00:46,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2020-10-20 01:00:46,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a10cb3c/59d9835b75bd42e9818500eacce8a753/FLAG38452fd5b [2020-10-20 01:00:46,793 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:00:46,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2020-10-20 01:00:46,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a10cb3c/59d9835b75bd42e9818500eacce8a753/FLAG38452fd5b [2020-10-20 01:00:47,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a10cb3c/59d9835b75bd42e9818500eacce8a753 [2020-10-20 01:00:47,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:00:47,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:00:47,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:47,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:00:47,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:00:47,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc3229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47, skipping insertion in model container [2020-10-20 01:00:47,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:00:47,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:00:47,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:47,437 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:00:47,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:47,482 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:00:47,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47 WrapperNode [2020-10-20 01:00:47,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:47,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:47,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:00:47,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:00:47,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:47,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:00:47,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:00:47,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:00:47,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... [2020-10-20 01:00:47,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:00:47,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:00:47,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:00:47,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:00:47,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:00:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:00:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:00:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:00:47,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:00:47,851 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:00:47,851 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 01:00:47,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:47 BoogieIcfgContainer [2020-10-20 01:00:47,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:00:47,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:00:47,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:00:47,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:00:47,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:00:47" (1/3) ... [2020-10-20 01:00:47,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598a7395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:47, skipping insertion in model container [2020-10-20 01:00:47,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:47" (2/3) ... [2020-10-20 01:00:47,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598a7395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:47, skipping insertion in model container [2020-10-20 01:00:47,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:47" (3/3) ... [2020-10-20 01:00:47,871 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-10-20 01:00:47,905 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:00:47,923 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:00:47,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:00:47,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:00:47,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:00:47,969 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:00:47,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:00:47,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:00:47,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:00:47,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:00:47,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:00:47,987 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 01:00:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 01:00:47,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:47,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:47,996 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1446203657, now seen corresponding path program 1 times [2020-10-20 01:00:48,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:48,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444950485] [2020-10-20 01:00:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444950485] [2020-10-20 01:00:48,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:48,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:00:48,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621471962] [2020-10-20 01:00:48,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:00:48,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:48,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:00:48,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:00:48,178 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-20 01:00:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:48,203 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-10-20 01:00:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:00:48,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 01:00:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:48,214 INFO L225 Difference]: With dead ends: 25 [2020-10-20 01:00:48,215 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 01:00:48,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:00:48,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 01:00:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 01:00:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 01:00:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-20 01:00:48,251 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-10-20 01:00:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:48,252 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-20 01:00:48,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:00:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-20 01:00:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 01:00:48,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:48,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:48,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:00:48,254 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:48,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1331687053, now seen corresponding path program 1 times [2020-10-20 01:00:48,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:48,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935707596] [2020-10-20 01:00:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935707596] [2020-10-20 01:00:48,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:48,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:00:48,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723968803] [2020-10-20 01:00:48,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:00:48,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:48,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:00:48,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:00:48,315 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-10-20 01:00:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:48,332 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-20 01:00:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:00:48,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 01:00:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:48,333 INFO L225 Difference]: With dead ends: 17 [2020-10-20 01:00:48,334 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 01:00:48,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:00:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 01:00:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 01:00:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 01:00:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 01:00:48,339 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-10-20 01:00:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:48,339 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 01:00:48,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:00:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 01:00:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 01:00:48,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:48,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:48,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:00:48,341 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:48,342 INFO L82 PathProgramCache]: Analyzing trace with hash -66976811, now seen corresponding path program 1 times [2020-10-20 01:00:48,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:48,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196678180] [2020-10-20 01:00:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196678180] [2020-10-20 01:00:48,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511072724] [2020-10-20 01:00:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:48,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 01:00:48,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:48,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 01:00:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:48,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-20 01:00:48,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13063644] [2020-10-20 01:00:48,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 01:00:48,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:48,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 01:00:48,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:00:48,814 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2020-10-20 01:00:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:48,893 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-20 01:00:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:00:48,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-20 01:00:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:48,894 INFO L225 Difference]: With dead ends: 18 [2020-10-20 01:00:48,894 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 01:00:48,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-20 01:00:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 01:00:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 01:00:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 01:00:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 01:00:48,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-20 01:00:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:48,900 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 01:00:48,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 01:00:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 01:00:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 01:00:48,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:48,901 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:49,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 01:00:49,114 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash -475883635, now seen corresponding path program 2 times [2020-10-20 01:00:49,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:49,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528498151] [2020-10-20 01:00:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:49,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528498151] [2020-10-20 01:00:49,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681862747] [2020-10-20 01:00:49,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:49,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:00:49,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:00:49,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 01:00:49,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:49,501 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:49,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 01:00:49,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 01:00:49,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:49,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:49,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-10-20 01:00:49,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819021586] [2020-10-20 01:00:49,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 01:00:49,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:49,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 01:00:49,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:00:49,564 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2020-10-20 01:00:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:49,855 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-10-20 01:00:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 01:00:49,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-20 01:00:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:49,856 INFO L225 Difference]: With dead ends: 15 [2020-10-20 01:00:49,856 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:00:49,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-20 01:00:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:00:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:00:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:00:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:00:49,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-20 01:00:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:49,858 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:00:49,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 01:00:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:00:49,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:00:50,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:50,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:00:50,122 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:00:50,122 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 01:00:50,123 INFO L277 CegarLoopResult]: At program point L36(lines 24 37) the Hoare annotation is: true [2020-10-20 01:00:50,123 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:00:50,123 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:00:50,123 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:00:50,123 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-20 01:00:50,123 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~hi~0 .cse0))) [2020-10-20 01:00:50,124 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2020-10-20 01:00:50,124 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 01:00:50,124 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-20 01:00:50,124 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-20 01:00:50,124 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 01:00:50,124 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 01:00:50,124 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 01:00:50,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:00:50 BoogieIcfgContainer [2020-10-20 01:00:50,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:00:50,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:00:50,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:00:50,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:00:50,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:47" (3/4) ... [2020-10-20 01:00:50,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:00:50,165 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 01:00:50,165 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:00:50,166 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:00:50,166 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:00:50,217 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:00:50,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:00:50,220 INFO L168 Benchmark]: Toolchain (without parser) took 3051.15 ms. Allocated memory was 43.0 MB in the beginning and 51.4 MB in the end (delta: 8.4 MB). Free memory was 21.7 MB in the beginning and 24.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,221 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 32.5 MB. Free memory was 9.7 MB in the beginning and 9.6 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.96 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 20.9 MB in the beginning and 21.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.99 ms. Allocated memory is still 43.5 MB. Free memory was 21.8 MB in the beginning and 20.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,224 INFO L168 Benchmark]: Boogie Preprocessor took 50.03 ms. Allocated memory is still 43.5 MB. Free memory was 20.2 MB in the beginning and 19.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,225 INFO L168 Benchmark]: RCFGBuilder took 272.49 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 18.9 MB in the beginning and 23.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,226 INFO L168 Benchmark]: TraceAbstraction took 2293.45 ms. Allocated memory was 45.1 MB in the beginning and 51.4 MB in the end (delta: 6.3 MB). Free memory was 23.2 MB in the beginning and 26.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,226 INFO L168 Benchmark]: Witness Printer took 68.94 ms. Allocated memory is still 51.4 MB. Free memory was 26.8 MB in the beginning and 24.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:50,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 32.5 MB. Free memory was 9.7 MB in the beginning and 9.6 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 308.96 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 20.9 MB in the beginning and 21.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.99 ms. Allocated memory is still 43.5 MB. Free memory was 21.8 MB in the beginning and 20.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 50.03 ms. Allocated memory is still 43.5 MB. Free memory was 20.2 MB in the beginning and 19.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 272.49 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 18.9 MB in the beginning and 23.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2293.45 ms. Allocated memory was 45.1 MB in the beginning and 51.4 MB in the end (delta: 6.3 MB). Free memory was 23.2 MB in the beginning and 26.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Witness Printer took 68.94 ms. Allocated memory is still 51.4 MB. Free memory was 26.8 MB in the beginning and 24.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (lo + 2 * mid <= hi && lo <= hi) && hi <= lo + 2 * mid - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 21 SDslu, 33 SDs, 0 SdLazy, 63 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 99 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2795 SizeOfPredicates, 10 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...