./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/large_const.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-invgen/large_const.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 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 01:00:27,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:00:27,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:00:27,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:00:27,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:00:27,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:00:27,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:00:27,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:00:27,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:00:27,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:00:27,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:00:27,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:00:27,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:00:27,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:00:27,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:00:27,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:00:27,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:00:27,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:00:27,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:00:27,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:00:27,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:00:27,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:00:27,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:00:27,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:00:27,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:00:27,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:00:27,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:00:27,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:00:27,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:00:27,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:00:27,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:00:27,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:00:27,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:00:27,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:00:27,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:00:27,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:00:27,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:00:27,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:00:27,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:00:27,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:00:27,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:00:27,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:00:27,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:00:27,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:00:27,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:00:27,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:00:27,844 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:00:27,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:00:27,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:00:27,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:00:27,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:00:27,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:00:27,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:00:27,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:00:27,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:00:27,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:00:27,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:00:27,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:00:27,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:00:27,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:00:27,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:00:27,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:00:27,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:00:27,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:00:27,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:00:27,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:00:27,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:00:27,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:00:27,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:00:27,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:00:27,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:00:27,852 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 -> 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 [2020-10-20 01:00:28,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:00:28,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:00:28,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:00:28,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:00:28,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:00:28,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/large_const.i [2020-10-20 01:00:28,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00269eb26/9f6095a2086b417580913295f40674ab/FLAGe9ba0f9cc [2020-10-20 01:00:28,584 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:00:28,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/large_const.i [2020-10-20 01:00:28,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00269eb26/9f6095a2086b417580913295f40674ab/FLAGe9ba0f9cc [2020-10-20 01:00:28,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00269eb26/9f6095a2086b417580913295f40674ab [2020-10-20 01:00:28,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:00:28,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:00:28,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:28,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:00:28,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:00:28,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:28" (1/1) ... [2020-10-20 01:00:28,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106e8f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:28, skipping insertion in model container [2020-10-20 01:00:28,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:28" (1/1) ... [2020-10-20 01:00:28,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:00:28,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:00:29,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:29,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:00:29,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:29,243 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:00:29,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29 WrapperNode [2020-10-20 01:00:29,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:29,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:29,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:00:29,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:00:29,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:29,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:00:29,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:00:29,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:00:29,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (1/1) ... [2020-10-20 01:00:29,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:00:29,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:00:29,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:00:29,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:00:29,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (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 01:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:00:29,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:00:29,617 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:00:29,617 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 01:00:29,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:29 BoogieIcfgContainer [2020-10-20 01:00:29,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:00:29,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:00:29,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:00:29,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:00:29,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:00:28" (1/3) ... [2020-10-20 01:00:29,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb1324c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:29, skipping insertion in model container [2020-10-20 01:00:29,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:29" (2/3) ... [2020-10-20 01:00:29,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb1324c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:29, skipping insertion in model container [2020-10-20 01:00:29,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:29" (3/3) ... [2020-10-20 01:00:29,629 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-10-20 01:00:29,642 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:00:29,650 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:00:29,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:00:29,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:00:29,708 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:00:29,708 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:00:29,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:00:29,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:00:29,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:00:29,709 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:00:29,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:00:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-20 01:00:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 01:00:29,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:29,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:29,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash -618080790, now seen corresponding path program 1 times [2020-10-20 01:00:29,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:29,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727966653] [2020-10-20 01:00:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:29,912 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 01:00:29,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727966653] [2020-10-20 01:00:29,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:29,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:00:29,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083202410] [2020-10-20 01:00:29,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:00:29,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:29,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:00:29,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:00:29,937 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-20 01:00:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:29,954 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2020-10-20 01:00:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:00:29,956 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 01:00:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:29,965 INFO L225 Difference]: With dead ends: 32 [2020-10-20 01:00:29,966 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 01:00:29,969 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 01:00:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 01:00:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 01:00:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 01:00:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-10-20 01:00:30,005 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2020-10-20 01:00:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:30,005 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-20 01:00:30,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:00:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2020-10-20 01:00:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 01:00:30,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:30,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:30,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:00:30,007 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:30,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:30,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1188285226, now seen corresponding path program 1 times [2020-10-20 01:00:30,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:30,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147098848] [2020-10-20 01:00:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:30,096 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 01:00:30,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147098848] [2020-10-20 01:00:30,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:30,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:00:30,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116397505] [2020-10-20 01:00:30,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:00:30,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:00:30,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:00:30,101 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 5 states. [2020-10-20 01:00:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:30,174 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-10-20 01:00:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:00:30,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 01:00:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:30,175 INFO L225 Difference]: With dead ends: 25 [2020-10-20 01:00:30,176 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 01:00:30,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:00:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 01:00:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 01:00:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 01:00:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-10-20 01:00:30,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2020-10-20 01:00:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:30,182 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-10-20 01:00:30,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:00:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-10-20 01:00:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 01:00:30,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:30,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:30,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:00:30,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:30,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1399374731, now seen corresponding path program 1 times [2020-10-20 01:00:30,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:30,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283769041] [2020-10-20 01:00:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:30,288 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 01:00:30,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283769041] [2020-10-20 01:00:30,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693109766] [2020-10-20 01:00:30,291 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 01:00:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:30,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:00:30,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:30,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:30,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:30,488 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 01:00:30,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:30,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-20 01:00:30,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079337887] [2020-10-20 01:00:30,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 01:00:30,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:30,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 01:00:30,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:00:30,492 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 8 states. [2020-10-20 01:00:30,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:30,658 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-10-20 01:00:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:00:30,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-20 01:00:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:30,660 INFO L225 Difference]: With dead ends: 39 [2020-10-20 01:00:30,660 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 01:00:30,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-20 01:00:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 01:00:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2020-10-20 01:00:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 01:00:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-10-20 01:00:30,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-10-20 01:00:30,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:30,668 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-10-20 01:00:30,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 01:00:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-10-20 01:00:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 01:00:30,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:30,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:30,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 01:00:30,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1122355762, now seen corresponding path program 1 times [2020-10-20 01:00:30,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:30,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34243025] [2020-10-20 01:00:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:31,010 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 01:00:31,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34243025] [2020-10-20 01:00:31,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445839346] [2020-10-20 01:00:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 01:00:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:31,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:00:31,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:31,110 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:31,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:31,129 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 01:00:31,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:31,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-20 01:00:31,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554083138] [2020-10-20 01:00:31,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 01:00:31,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:31,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 01:00:31,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:00:31,132 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 8 states. [2020-10-20 01:00:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:31,282 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-20 01:00:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:00:31,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 01:00:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:31,284 INFO L225 Difference]: With dead ends: 45 [2020-10-20 01:00:31,284 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 01:00:31,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-20 01:00:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 01:00:31,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2020-10-20 01:00:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 01:00:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2020-10-20 01:00:31,292 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 14 [2020-10-20 01:00:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:31,293 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2020-10-20 01:00:31,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 01:00:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2020-10-20 01:00:31,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 01:00:31,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:31,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:31,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:31,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1931702388, now seen corresponding path program 1 times [2020-10-20 01:00:31,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:31,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147588674] [2020-10-20 01:00:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:31,569 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 01:00:31,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147588674] [2020-10-20 01:00:31,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158929319] [2020-10-20 01:00:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:31,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:00:31,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:31,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:31,663 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:31,676 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 01:00:31,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:31,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-20 01:00:31,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685405581] [2020-10-20 01:00:31,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 01:00:31,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:31,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 01:00:31,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:00:31,679 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 8 states. [2020-10-20 01:00:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:31,801 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-10-20 01:00:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:00:31,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 01:00:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:31,803 INFO L225 Difference]: With dead ends: 49 [2020-10-20 01:00:31,803 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 01:00:31,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-20 01:00:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 01:00:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2020-10-20 01:00:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 01:00:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 46 transitions. [2020-10-20 01:00:31,810 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 46 transitions. Word has length 14 [2020-10-20 01:00:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:31,811 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 46 transitions. [2020-10-20 01:00:31,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 01:00:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2020-10-20 01:00:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:00:31,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:31,812 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:32,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:32,025 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 864066597, now seen corresponding path program 1 times [2020-10-20 01:00:32,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:32,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817677157] [2020-10-20 01:00:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:32,145 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 01:00:32,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817677157] [2020-10-20 01:00:32,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004941645] [2020-10-20 01:00:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:32,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 01:00:32,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:32,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:00:32,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-10-20 01:00:32,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915129215] [2020-10-20 01:00:32,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:00:32,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:32,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:00:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:00:32,287 INFO L87 Difference]: Start difference. First operand 33 states and 46 transitions. Second operand 5 states. [2020-10-20 01:00:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:32,333 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2020-10-20 01:00:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:00:32,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 01:00:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:32,336 INFO L225 Difference]: With dead ends: 41 [2020-10-20 01:00:32,336 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 01:00:32,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:00:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 01:00:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 01:00:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 01:00:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2020-10-20 01:00:32,348 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 16 [2020-10-20 01:00:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:32,348 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2020-10-20 01:00:32,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:00:32,348 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2020-10-20 01:00:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:00:32,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:32,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:32,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:32,559 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:32,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1269407229, now seen corresponding path program 1 times [2020-10-20 01:00:32,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:32,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959395531] [2020-10-20 01:00:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:32,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959395531] [2020-10-20 01:00:32,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172601331] [2020-10-20 01:00:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:32,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 01:00:32,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:32,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:00:32,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-10-20 01:00:32,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816142777] [2020-10-20 01:00:32,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:00:32,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:32,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:00:32,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:00:32,702 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 5 states. [2020-10-20 01:00:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:32,710 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2020-10-20 01:00:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:00:32,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 01:00:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:32,712 INFO L225 Difference]: With dead ends: 32 [2020-10-20 01:00:32,712 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:00:32,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:00:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:00:32,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:00:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:00:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:00:32,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 01:00:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:32,714 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:00:32,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:00:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:00:32,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:00:32,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 01:00:32,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:00:33,230 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-20 01:00:33,231 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 01:00:33,231 INFO L274 CegarLoopResult]: For program point L40(lines 40 43) no Hoare annotation was computed. [2020-10-20 01:00:33,231 INFO L270 CegarLoopResult]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse1 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse2 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~k~0 0) .cse0 .cse1 .cse2) (and (< ULTIMATE.start_main_~n~0 2) .cse0 .cse1 .cse2 (<= 2000 ULTIMATE.start_main_~k~0) (<= 1 ULTIMATE.start_main_~i~0)))) [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 01:00:33,232 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-10-20 01:00:33,233 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:00:33,234 INFO L270 CegarLoopResult]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse2 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse3 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start_main_~j~0) .cse2 .cse3) (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~j~0 0) (<= ULTIMATE.start_main_~n~0 0)) (and (<= 0 ULTIMATE.start_main_~j~0) .cse0 .cse1 .cse2 .cse3 (<= 2000 ULTIMATE.start_main_~k~0)))) [2020-10-20 01:00:33,235 INFO L274 CegarLoopResult]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2020-10-20 01:00:33,235 INFO L274 CegarLoopResult]: For program point L38(lines 38 43) no Hoare annotation was computed. [2020-10-20 01:00:33,235 INFO L274 CegarLoopResult]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2020-10-20 01:00:33,236 INFO L277 CegarLoopResult]: At program point L51(lines 24 52) the Hoare annotation is: true [2020-10-20 01:00:33,236 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-20 01:00:33,236 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~n~0 2) (<= 4000 ULTIMATE.start_main_~c1~0) (<= 2000 ULTIMATE.start_main_~c2~0) (<= 10000 ULTIMATE.start_main_~c3~0)) [2020-10-20 01:00:33,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:00:33 BoogieIcfgContainer [2020-10-20 01:00:33,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:00:33,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:00:33,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:00:33,271 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:00:33,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:29" (3/4) ... [2020-10-20 01:00:33,276 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:00:33,294 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 01:00:33,294 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:00:33,295 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 01:00:33,295 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:00:33,353 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:00:33,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:00:33,356 INFO L168 Benchmark]: Toolchain (without parser) took 4433.49 ms. Allocated memory was 34.1 MB in the beginning and 55.6 MB in the end (delta: 21.5 MB). Free memory was 7.3 MB in the beginning and 11.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,357 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 12.0 MB in the beginning and 12.0 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.60 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.7 MB in the beginning and 26.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.42 ms. Allocated memory is still 44.0 MB. Free memory was 25.9 MB in the beginning and 24.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,359 INFO L168 Benchmark]: Boogie Preprocessor took 21.64 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,360 INFO L168 Benchmark]: RCFGBuilder took 318.54 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 22.8 MB in the beginning and 22.4 MB in the end (delta: 364.4 kB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,361 INFO L168 Benchmark]: TraceAbstraction took 3649.29 ms. Allocated memory was 46.7 MB in the beginning and 55.6 MB in the end (delta: 8.9 MB). Free memory was 21.7 MB in the beginning and 14.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,362 INFO L168 Benchmark]: Witness Printer took 82.80 ms. Allocated memory is still 55.6 MB. Free memory was 14.3 MB in the beginning and 11.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:33,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 12.0 MB in the beginning and 12.0 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 304.60 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.7 MB in the beginning and 26.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 34.42 ms. Allocated memory is still 44.0 MB. Free memory was 25.9 MB in the beginning and 24.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.64 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 318.54 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 22.8 MB in the beginning and 22.4 MB in the end (delta: 364.4 kB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3649.29 ms. Allocated memory was 46.7 MB in the beginning and 55.6 MB in the end (delta: 8.9 MB). Free memory was 21.7 MB in the beginning and 14.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 14.3 GB. * Witness Printer took 82.80 ms. Allocated memory is still 55.6 MB. Free memory was 14.3 MB in the beginning and 11.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 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: ((((!(0 == cond) && 0 <= j) && n < 2) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((i == 0 && k == 0) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) || (((((n < 2 && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) && 2000 <= k) && 1 <= i) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((n < 2 && 4000 <= c1) && 1 <= j) && 2000 <= c2) && 10000 <= c3) || ((i == 0 && j == 0) && n <= 0)) || (((((0 <= j && n < 2) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) && 2000 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 141 SDslu, 232 SDs, 0 SdLazy, 208 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=5, 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, 7 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 103 HoareAnnotationTreeSize, 4 FomulaSimplifications, 581 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 247 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 6015 SizeOfPredicates, 15 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 12/22 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...