./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 f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b03e1cb325e2c3a8ef30197a8e07012b3a728d97 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:06:24,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:24,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:24,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:24,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:24,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:24,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:24,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:24,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:24,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:24,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:24,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:24,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:24,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:24,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:24,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:24,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:24,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:24,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:24,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:24,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:24,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:24,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:24,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:24,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:24,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:24,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:24,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:24,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:24,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:24,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:24,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:24,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:24,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:24,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:24,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:24,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:24,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:24,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:24,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:24,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:24,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:24,591 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:24,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:24,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:24,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:24,593 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:24,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:24,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:24,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:24,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:24,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:24,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:24,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:24,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:24,595 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:24,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:24,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:24,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:24,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:24,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:24,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:24,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:24,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:24,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:24,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:24,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:24,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:24,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:24,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:24,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:24,599 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(__VERIFIER_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 -> b03e1cb325e2c3a8ef30197a8e07012b3a728d97 [2019-11-28 17:06:24,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:24,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:24,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:24,929 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:24,929 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:24,930 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/large_const.i [2019-11-28 17:06:24,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac9ae0ac/7cf0a1b7ec144de68449f1e91225da35/FLAGe1b3d1d9a [2019-11-28 17:06:25,407 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:25,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/large_const.i [2019-11-28 17:06:25,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac9ae0ac/7cf0a1b7ec144de68449f1e91225da35/FLAGe1b3d1d9a [2019-11-28 17:06:25,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac9ae0ac/7cf0a1b7ec144de68449f1e91225da35 [2019-11-28 17:06:25,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:25,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:25,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:25,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:25,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:25,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:25" (1/1) ... [2019-11-28 17:06:25,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a6e3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:25, skipping insertion in model container [2019-11-28 17:06:25,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:25" (1/1) ... [2019-11-28 17:06:25,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:25,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:26,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:26,096 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:26,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:26,143 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:26,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26 WrapperNode [2019-11-28 17:06:26,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:26,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:26,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:26,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:26,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:26,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:26,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:26,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:26,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (1/1) ... [2019-11-28 17:06:26,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:26,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:26,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:26,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:26,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (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 [2019-11-28 17:06:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:26,568 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:26,568 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 17:06:26,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:26 BoogieIcfgContainer [2019-11-28 17:06:26,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:26,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:26,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:26,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:26,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:25" (1/3) ... [2019-11-28 17:06:26,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f12084e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:26, skipping insertion in model container [2019-11-28 17:06:26,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:26" (2/3) ... [2019-11-28 17:06:26,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f12084e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:26, skipping insertion in model container [2019-11-28 17:06:26,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:26" (3/3) ... [2019-11-28 17:06:26,580 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-11-28 17:06:26,596 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:06:26,606 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:06:26,647 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:06:26,679 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:06:26,679 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:06:26,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:06:26,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:06:26,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:06:26,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:06:26,680 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:06:26,680 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:06:26,695 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-28 17:06:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:06:26,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:26,700 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:26,701 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1461315706, now seen corresponding path program 1 times [2019-11-28 17:06:26,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:26,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355184869] [2019-11-28 17:06:26,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:26,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355184869] [2019-11-28 17:06:26,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:26,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:06:26,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18428526] [2019-11-28 17:06:26,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:06:26,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:26,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:06:26,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:06:26,848 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-28 17:06:26,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:26,864 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2019-11-28 17:06:26,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:06:26,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-28 17:06:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:26,874 INFO L225 Difference]: With dead ends: 26 [2019-11-28 17:06:26,874 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 17:06:26,878 INFO L630 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 [2019-11-28 17:06:26,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 17:06:26,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 17:06:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 17:06:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-11-28 17:06:26,914 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-11-28 17:06:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:26,915 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-28 17:06:26,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:06:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-11-28 17:06:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:06:26,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:26,917 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:26,917 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1479786126, now seen corresponding path program 1 times [2019-11-28 17:06:26,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:26,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357851201] [2019-11-28 17:06:26,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:27,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357851201] [2019-11-28 17:06:27,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:27,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:06:27,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871477] [2019-11-28 17:06:27,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:06:27,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:27,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:06:27,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:06:27,014 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 5 states. [2019-11-28 17:06:27,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:27,083 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-11-28 17:06:27,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:06:27,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 17:06:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:27,084 INFO L225 Difference]: With dead ends: 20 [2019-11-28 17:06:27,084 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 17:06:27,086 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:06:27,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 17:06:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-28 17:06:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 17:06:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-28 17:06:27,092 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2019-11-28 17:06:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:27,093 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-28 17:06:27,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:06:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-11-28 17:06:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:06:27,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:27,094 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:27,095 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:27,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1660828652, now seen corresponding path program 1 times [2019-11-28 17:06:27,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:27,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443753166] [2019-11-28 17:06:27,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:27,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443753166] [2019-11-28 17:06:27,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617043753] [2019-11-28 17:06:27,173 INFO L94 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 [2019-11-28 17:06:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:27,229 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 17:06:27,237 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:27,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:27,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:27,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-28 17:06:27,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61554633] [2019-11-28 17:06:27,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:06:27,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:27,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:06:27,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:06:27,326 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 8 states. [2019-11-28 17:06:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:27,522 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-11-28 17:06:27,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 17:06:27,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-28 17:06:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:27,524 INFO L225 Difference]: With dead ends: 32 [2019-11-28 17:06:27,524 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 17:06:27,525 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:06:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 17:06:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2019-11-28 17:06:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 17:06:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-28 17:06:27,531 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-11-28 17:06:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:27,532 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-28 17:06:27,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:06:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-28 17:06:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:06:27,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:27,533 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:27,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:27,738 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:27,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2129936810, now seen corresponding path program 1 times [2019-11-28 17:06:27,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:27,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042530029] [2019-11-28 17:06:27,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:27,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042530029] [2019-11-28 17:06:27,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035321030] [2019-11-28 17:06:27,839 INFO L94 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 [2019-11-28 17:06:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:27,872 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 17:06:27,874 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:27,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:27,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:27,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-28 17:06:27,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575371549] [2019-11-28 17:06:27,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:06:27,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:06:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:06:27,913 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 8 states. [2019-11-28 17:06:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:28,102 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2019-11-28 17:06:28,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 17:06:28,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-28 17:06:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:28,104 INFO L225 Difference]: With dead ends: 38 [2019-11-28 17:06:28,104 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 17:06:28,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:06:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 17:06:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2019-11-28 17:06:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 17:06:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-11-28 17:06:28,112 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 11 [2019-11-28 17:06:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:28,113 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-11-28 17:06:28,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:06:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-11-28 17:06:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:06:28,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:28,114 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:28,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:28,316 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:28,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2107772184, now seen corresponding path program 1 times [2019-11-28 17:06:28,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:28,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581713930] [2019-11-28 17:06:28,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:28,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581713930] [2019-11-28 17:06:28,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300551188] [2019-11-28 17:06:28,370 INFO L94 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 [2019-11-28 17:06:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:28,420 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 17:06:28,421 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:28,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:28,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:28,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-28 17:06:28,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218378347] [2019-11-28 17:06:28,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:06:28,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:28,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:06:28,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:06:28,454 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand 8 states. [2019-11-28 17:06:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:28,629 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2019-11-28 17:06:28,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 17:06:28,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-28 17:06:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:28,632 INFO L225 Difference]: With dead ends: 42 [2019-11-28 17:06:28,632 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 17:06:28,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:06:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 17:06:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2019-11-28 17:06:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 17:06:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2019-11-28 17:06:28,651 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 11 [2019-11-28 17:06:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:28,652 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2019-11-28 17:06:28,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:06:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2019-11-28 17:06:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 17:06:28,656 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:28,656 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:28,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:28,860 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash -272038047, now seen corresponding path program 1 times [2019-11-28 17:06:28,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:28,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191318555] [2019-11-28 17:06:28,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 17:06:28,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191318555] [2019-11-28 17:06:28,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866526992] [2019-11-28 17:06:28,969 INFO L94 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 [2019-11-28 17:06:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:29,013 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 17:06:29,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:29,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 17:06:29,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2019-11-28 17:06:29,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346452333] [2019-11-28 17:06:29,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:06:29,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:29,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:06:29,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:06:29,074 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 5 states. [2019-11-28 17:06:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:29,111 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2019-11-28 17:06:29,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:06:29,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-28 17:06:29,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:29,113 INFO L225 Difference]: With dead ends: 36 [2019-11-28 17:06:29,113 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 17:06:29,114 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:06:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 17:06:29,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 17:06:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 17:06:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2019-11-28 17:06:29,120 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 13 [2019-11-28 17:06:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:29,120 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2019-11-28 17:06:29,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:06:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-11-28 17:06:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 17:06:29,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:29,122 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:29,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:29,327 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:29,328 INFO L82 PathProgramCache]: Analyzing trace with hash 55602980, now seen corresponding path program 1 times [2019-11-28 17:06:29,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:29,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846545325] [2019-11-28 17:06:29,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:29,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846545325] [2019-11-28 17:06:29,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941522382] [2019-11-28 17:06:29,444 INFO L94 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 [2019-11-28 17:06:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:29,481 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 17:06:29,483 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:29,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 17:06:29,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2019-11-28 17:06:29,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549545722] [2019-11-28 17:06:29,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:06:29,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:29,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:06:29,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:06:29,537 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 5 states. [2019-11-28 17:06:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:29,553 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-28 17:06:29,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:06:29,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 17:06:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:29,554 INFO L225 Difference]: With dead ends: 29 [2019-11-28 17:06:29,554 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:06:29,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:06:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:06:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:06:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:06:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:06:29,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-28 17:06:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:29,556 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:06:29,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:06:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:06:29,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:06:29,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:29,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:06:30,100 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2019-11-28 17:06:30,103 INFO L246 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-28 17:06:30,103 INFO L242 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: (let ((.cse0 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse2 (<= 10000 ULTIMATE.start_main_~c3~0)) (.cse1 (< ULTIMATE.start_main_~n~0 2)) (.cse3 (<= 4000 ULTIMATE.start_main_~c1~0))) (or (and (<= 1 ULTIMATE.start_main_~j~0) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse1 (<= 2000 ULTIMATE.start_main_~k~0) (<= 0 ULTIMATE.start_main_~j~0) .cse3) (and (<= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~n~0 0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)))) [2019-11-28 17:06:30,103 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:06:30,103 INFO L246 CegarLoopResult]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2019-11-28 17:06:30,104 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:06:30,104 INFO L246 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-11-28 17:06:30,104 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 17:06:30,104 INFO L246 CegarLoopResult]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2019-11-28 17:06:30,104 INFO L249 CegarLoopResult]: At program point L37(lines 10 38) the Hoare annotation is: true [2019-11-28 17:06:30,104 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 17:06:30,104 INFO L242 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (<= 2000 ULTIMATE.start_main_~c2~0) (< ULTIMATE.start_main_~n~0 2) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 10000 ULTIMATE.start_main_~c3~0) (<= 0 ULTIMATE.start_main_~j~0) (<= 4000 ULTIMATE.start_main_~c1~0)) [2019-11-28 17:06:30,105 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:06:30,105 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-28 17:06:30,105 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 17:06:30,105 INFO L246 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2019-11-28 17:06:30,105 INFO L242 CegarLoopResult]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse1 (<= 10000 ULTIMATE.start_main_~c3~0)) (.cse2 (<= 4000 ULTIMATE.start_main_~c1~0))) (or (and (<= 1 ULTIMATE.start_main_~i~0) .cse0 .cse1 (< ULTIMATE.start_main_~n~0 2) (<= 2000 ULTIMATE.start_main_~k~0) .cse2) (and (<= ULTIMATE.start_main_~i~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse2 (<= 0 ULTIMATE.start_main_~i~0)))) [2019-11-28 17:06:30,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:06:30 BoogieIcfgContainer [2019-11-28 17:06:30,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:06:30,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:06:30,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:06:30,128 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:06:30,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:26" (3/4) ... [2019-11-28 17:06:30,137 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:06:30,156 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 17:06:30,156 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:06:30,157 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:06:30,253 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:06:30,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:06:30,255 INFO L168 Benchmark]: Toolchain (without parser) took 4428.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 960.4 MB in the beginning and 866.5 MB in the end (delta: 93.9 MB). Peak memory consumption was 237.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:30,257 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:30,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.88 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:30,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:30,261 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:30,262 INFO L168 Benchmark]: RCFGBuilder took 272.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:30,262 INFO L168 Benchmark]: TraceAbstraction took 3555.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.3 MB in the end (delta: 233.6 MB). Peak memory consumption was 233.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:30,267 INFO L168 Benchmark]: Witness Printer took 125.87 ms. Allocated memory is still 1.2 GB. Free memory was 873.3 MB in the beginning and 866.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:30,269 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 316.88 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 132.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 272.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3555.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.3 MB in the end (delta: 233.6 MB). Peak memory consumption was 233.6 MB. Max. memory is 11.5 GB. * Witness Printer took 125.87 ms. Allocated memory is still 1.2 GB. Free memory was 873.3 MB in the beginning and 866.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((((2000 <= c2 && n < 2) && !(0 == cond)) && 10000 <= c3) && 0 <= j) && 4000 <= c1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((1 <= i && 2000 <= c2) && 10000 <= c3) && n < 2) && 2000 <= k) && 4000 <= c1) || (((((i <= 0 && 0 <= k) && 2000 <= c2) && 10000 <= c3) && 4000 <= c1) && 0 <= i) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((1 <= j && 2000 <= c2) && n < 2) && 10000 <= c3) && 4000 <= c1) || (((((2000 <= c2 && 10000 <= c3) && n < 2) && 2000 <= k) && 0 <= j) && 4000 <= c1)) || ((i <= 0 && n <= 0) && n <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 107 SDtfs, 118 SDslu, 188 SDs, 0 SdLazy, 233 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 106 HoareAnnotationTreeSize, 4 FomulaSimplifications, 549 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 276 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4831 SizeOfPredicates, 15 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 9/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...