./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/sqrt1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/nla-digbench/sqrt1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18069e734ad3e799af7ba506a01bcf1d8ca8899c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:07:56,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:07:56,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:07:56,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:07:56,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:07:56,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:07:56,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:07:56,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:07:56,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:07:56,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:07:56,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:07:56,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:07:56,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:07:56,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:07:56,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:07:56,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:07:56,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:07:56,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:07:56,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:07:56,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:07:56,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:07:56,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:07:56,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:07:56,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:07:56,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:07:56,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:07:56,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:07:56,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:07:56,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:07:56,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:07:56,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:07:56,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:07:56,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:07:56,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:07:56,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:07:56,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:07:56,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:07:56,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:07:56,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:07:56,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:07:56,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:07:56,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:07:56,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:07:56,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:07:56,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:07:56,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:07:56,737 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:07:56,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:07:56,738 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:07:56,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:07:56,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:07:56,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:07:56,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:07:56,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:07:56,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:07:56,740 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:07:56,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:07:56,740 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:07:56,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:07:56,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:07:56,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:07:56,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:07:56,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:07:56,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:07:56,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:07:56,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:07:56,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:07:56,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:07:56,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:07:56,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:07:56,744 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 -> 18069e734ad3e799af7ba506a01bcf1d8ca8899c [2019-11-28 00:07:57,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:07:57,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:07:57,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:07:57,058 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:07:57,058 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:07:57,059 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/sqrt1.c [2019-11-28 00:07:57,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7a3877c/87f838b4e8414a19816afcb5487e7855/FLAG63b6f0f0f [2019-11-28 00:07:57,566 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:07:57,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/sqrt1.c [2019-11-28 00:07:57,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7a3877c/87f838b4e8414a19816afcb5487e7855/FLAG63b6f0f0f [2019-11-28 00:07:57,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7a3877c/87f838b4e8414a19816afcb5487e7855 [2019-11-28 00:07:57,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:07:57,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:07:57,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:57,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:07:57,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:07:57,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:57" (1/1) ... [2019-11-28 00:07:57,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9b4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:57, skipping insertion in model container [2019-11-28 00:07:57,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:57" (1/1) ... [2019-11-28 00:07:57,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:07:57,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:07:58,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:58,245 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:07:58,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:58,290 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:07:58,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58 WrapperNode [2019-11-28 00:07:58,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:58,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:58,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:07:58,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:07:58,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:58,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:07:58,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:07:58,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:07:58,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (1/1) ... [2019-11-28 00:07:58,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:07:58,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:07:58,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:07:58,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:07:58,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (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 00:07:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:07:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:07:58,750 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:07:58,751 INFO L297 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-28 00:07:58,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:58 BoogieIcfgContainer [2019-11-28 00:07:58,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:07:58,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:07:58,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:07:58,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:07:58,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:07:57" (1/3) ... [2019-11-28 00:07:58,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a62e636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:58, skipping insertion in model container [2019-11-28 00:07:58,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:58" (2/3) ... [2019-11-28 00:07:58,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a62e636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:58, skipping insertion in model container [2019-11-28 00:07:58,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:58" (3/3) ... [2019-11-28 00:07:58,760 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-11-28 00:07:58,771 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:07:58,778 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-28 00:07:58,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 00:07:58,828 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:07:58,828 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:07:58,829 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:07:58,829 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:07:58,829 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:07:58,830 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:07:58,830 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:07:58,830 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:07:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 00:07:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 00:07:58,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:58,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 00:07:58,861 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:58,870 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-28 00:07:58,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:58,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708468795] [2019-11-28 00:07:58,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:59,081 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 00:07:59,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708468795] [2019-11-28 00:07:59,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:59,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:07:59,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881188855] [2019-11-28 00:07:59,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:07:59,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:59,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:07:59,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:07:59,103 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-11-28 00:07:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:59,220 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2019-11-28 00:07:59,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:07:59,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 00:07:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:59,232 INFO L225 Difference]: With dead ends: 56 [2019-11-28 00:07:59,232 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 00:07:59,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 00:07:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-28 00:07:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 00:07:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-28 00:07:59,268 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 4 [2019-11-28 00:07:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:59,268 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-28 00:07:59,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:07:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-28 00:07:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 00:07:59,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:59,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 00:07:59,270 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:59,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:59,270 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-28 00:07:59,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:59,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180092339] [2019-11-28 00:07:59,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:59,279 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:59,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748686784] [2019-11-28 00:07:59,280 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 00:07:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:59,317 WARN L253 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 00:07:59,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:59,412 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 00:07:59,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180092339] [2019-11-28 00:07:59,413 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:59,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748686784] [2019-11-28 00:07:59,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:59,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 00:07:59,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858425748] [2019-11-28 00:07:59,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:59,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:59,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:59,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:59,418 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-28 00:07:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:59,564 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-11-28 00:07:59,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:59,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-28 00:07:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:59,567 INFO L225 Difference]: With dead ends: 44 [2019-11-28 00:07:59,567 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 00:07:59,569 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:59,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 00:07:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-11-28 00:07:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 00:07:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-28 00:07:59,588 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 6 [2019-11-28 00:07:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:59,588 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-28 00:07:59,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-28 00:07:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:07:59,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:59,590 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:07:59,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:59,794 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash -65748776, now seen corresponding path program 1 times [2019-11-28 00:07:59,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:59,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897774299] [2019-11-28 00:07:59,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:59,803 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:59,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615286792] [2019-11-28 00:07:59,804 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 00:07:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:59,843 WARN L253 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 00:07:59,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:59,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897774299] [2019-11-28 00:07:59,917 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:59,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615286792] [2019-11-28 00:07:59,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:59,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 00:07:59,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693500162] [2019-11-28 00:07:59,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:59,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:59,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:59,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:59,920 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2019-11-28 00:08:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:08:00,042 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2019-11-28 00:08:00,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:08:00,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-28 00:08:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:08:00,046 INFO L225 Difference]: With dead ends: 50 [2019-11-28 00:08:00,046 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 00:08:00,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:08:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 00:08:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2019-11-28 00:08:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 00:08:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-11-28 00:08:00,067 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 13 [2019-11-28 00:08:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:08:00,068 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2019-11-28 00:08:00,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:08:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2019-11-28 00:08:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 00:08:00,069 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:08:00,070 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 00:08:00,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:08:00,273 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:08:00,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:08:00,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1240091547, now seen corresponding path program 1 times [2019-11-28 00:08:00,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:08:00,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886856282] [2019-11-28 00:08:00,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:08:00,281 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:08:00,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287985907] [2019-11-28 00:08:00,282 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 00:08:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:08:00,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-28 00:08:00,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:08:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:08:00,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886856282] [2019-11-28 00:08:00,391 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:08:00,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287985907] [2019-11-28 00:08:00,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:08:00,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-28 00:08:00,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503762714] [2019-11-28 00:08:00,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 00:08:00,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:08:00,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 00:08:00,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:08:00,395 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 7 states. [2019-11-28 00:08:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:08:00,525 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-11-28 00:08:00,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:08:00,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-28 00:08:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:08:00,527 INFO L225 Difference]: With dead ends: 47 [2019-11-28 00:08:00,527 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 00:08:00,531 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:08:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 00:08:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-28 00:08:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 00:08:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-11-28 00:08:00,551 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 15 [2019-11-28 00:08:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:08:00,552 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-11-28 00:08:00,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 00:08:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-11-28 00:08:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 00:08:00,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:08:00,554 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-28 00:08:00,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:08:00,762 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:08:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:08:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1987102543, now seen corresponding path program 2 times [2019-11-28 00:08:00,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:08:00,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915862865] [2019-11-28 00:08:00,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:08:00,773 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:08:00,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448412451] [2019-11-28 00:08:00,774 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 00:08:00,815 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:08:00,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:08:00,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-28 00:08:00,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:08:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:08:00,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915862865] [2019-11-28 00:08:00,917 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:08:00,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448412451] [2019-11-28 00:08:00,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:08:00,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-28 00:08:00,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987402546] [2019-11-28 00:08:00,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:08:00,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:08:00,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:08:00,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:08:00,920 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 8 states. [2019-11-28 00:08:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:08:01,147 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2019-11-28 00:08:01,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:08:01,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-11-28 00:08:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:08:01,149 INFO L225 Difference]: With dead ends: 58 [2019-11-28 00:08:01,150 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 00:08:01,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-28 00:08:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 00:08:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-28 00:08:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 00:08:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2019-11-28 00:08:01,159 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 20 [2019-11-28 00:08:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:08:01,160 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2019-11-28 00:08:01,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:08:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2019-11-28 00:08:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-28 00:08:01,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:08:01,161 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1] [2019-11-28 00:08:01,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:08:01,365 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:08:01,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:08:01,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1833819384, now seen corresponding path program 3 times [2019-11-28 00:08:01,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:08:01,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970838927] [2019-11-28 00:08:01,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:08:01,375 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:08:01,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127254493] [2019-11-28 00:08:01,376 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 00:08:01,401 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-28 00:08:01,402 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:08:01,403 WARN L253 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-28 00:08:01,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:08:01,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:08:01,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:08:04,900 WARN L192 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 29 [2019-11-28 00:08:04,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:08:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-28 00:08:04,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970838927] [2019-11-28 00:08:04,964 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:08:04,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127254493] [2019-11-28 00:08:04,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:08:04,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-28 00:08:04,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145920766] [2019-11-28 00:08:04,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 00:08:04,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:08:04,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 00:08:04,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:08:04,967 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2019-11-28 00:08:05,434 WARN L192 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2019-11-28 00:08:11,203 WARN L192 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 51 DAG size of output: 14 [2019-11-28 00:08:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:08:11,290 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-11-28 00:08:11,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:08:11,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-28 00:08:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:08:11,291 INFO L225 Difference]: With dead ends: 43 [2019-11-28 00:08:11,292 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:08:11,292 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-28 00:08:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:08:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:08:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:08:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:08:11,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-11-28 00:08:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:08:11,293 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:08:11,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 00:08:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:08:11,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:08:11,494 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:08:11,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:08:11,895 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:11,896 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:11,896 INFO L242 CegarLoopResult]: At program point L23-2(lines 23 35) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) (or (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1)) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~s~0 (let ((.cse2 (+ ULTIMATE.start_main_~a~0 1))) (* .cse2 .cse2))) .cse1))) [2019-11-28 00:08:11,897 INFO L246 CegarLoopResult]: For program point L23-3(lines 23 35) no Hoare annotation was computed. [2019-11-28 00:08:11,897 INFO L246 CegarLoopResult]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:11,897 INFO L242 CegarLoopResult]: At program point L7-2(lines 6 12) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) [2019-11-28 00:08:11,897 INFO L246 CegarLoopResult]: For program point L7-3(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:11,898 INFO L242 CegarLoopResult]: At program point L7-5(lines 6 12) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) [2019-11-28 00:08:11,898 INFO L246 CegarLoopResult]: For program point L7-6(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:11,898 INFO L242 CegarLoopResult]: At program point L7-8(lines 29 30) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) [2019-11-28 00:08:11,898 INFO L246 CegarLoopResult]: For program point L7-9(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:11,898 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:11,898 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:08:11,898 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:08:11,899 INFO L242 CegarLoopResult]: At program point L7-11(lines 6 12) the Hoare annotation is: (or (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (= ULTIMATE.start_main_~s~0 4) (<= .cse0 ULTIMATE.start_main_~t~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~t~0 .cse0) (= ULTIMATE.start_main_~t~0 3))) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (and (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 2) .cse1 1)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 .cse1))))) [2019-11-28 00:08:11,899 INFO L246 CegarLoopResult]: For program point L7-12(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:11,899 INFO L242 CegarLoopResult]: At program point L7-14(lines 6 12) the Hoare annotation is: (let ((.cse2 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (let ((.cse0 (<= .cse2 ULTIMATE.start_main_~t~0)) (.cse1 (<= ULTIMATE.start_main_~t~0 .cse2))) (or (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)))) (and .cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1 (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (= ULTIMATE.start_main_~t~0 3))))) [2019-11-28 00:08:11,899 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:11,899 INFO L246 CegarLoopResult]: For program point L7-15(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:11,900 INFO L242 CegarLoopResult]: At program point L7-17(lines 6 12) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~t~0 .cse0))) [2019-11-28 00:08:11,900 INFO L242 CegarLoopResult]: At program point L41(lines 15 42) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~t~0 .cse0))) [2019-11-28 00:08:11,900 INFO L246 CegarLoopResult]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:11,900 INFO L246 CegarLoopResult]: For program point L8-1(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:11,900 INFO L246 CegarLoopResult]: For program point L8-2(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:11,901 INFO L246 CegarLoopResult]: For program point L8-3(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:11,901 INFO L246 CegarLoopResult]: For program point L8-4(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:11,901 INFO L246 CegarLoopResult]: For program point L8-5(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:11,901 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:08:11,902 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:11,902 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:11,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:08:11 BoogieIcfgContainer [2019-11-28 00:08:11,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:08:11,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:08:11,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:08:11,927 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:08:11,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:58" (3/4) ... [2019-11-28 00:08:11,931 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:08:11,943 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-28 00:08:11,943 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:08:12,008 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:08:12,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:08:12,014 INFO L168 Benchmark]: Toolchain (without parser) took 14048.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 953.6 MB in the beginning and 840.8 MB in the end (delta: 112.8 MB). Peak memory consumption was 262.2 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:12,015 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:08:12,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.26 ms. Allocated memory is still 1.0 GB. Free memory was 953.6 MB in the beginning and 942.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:12,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:12,020 INFO L168 Benchmark]: Boogie Preprocessor took 49.61 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:12,021 INFO L168 Benchmark]: RCFGBuilder took 293.74 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: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:12,022 INFO L168 Benchmark]: TraceAbstraction took 13173.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 847.5 MB in the end (delta: 272.2 MB). Peak memory consumption was 272.2 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:12,025 INFO L168 Benchmark]: Witness Printer took 86.22 ms. Allocated memory is still 1.2 GB. Free memory was 847.5 MB in the beginning and 840.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:12,032 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 324.26 ms. Allocated memory is still 1.0 GB. Free memory was 953.6 MB in the beginning and 942.9 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 116.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.61 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 293.74 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: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13173.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 847.5 MB in the end (delta: 272.2 MB). Peak memory consumption was 272.2 MB. Max. memory is 11.5 GB. * Witness Printer took 86.22 ms. Allocated memory is still 1.2 GB. Free memory was 847.5 MB in the beginning and 840.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a) || ((a == 0 && s == (a + 1) * (a + 1)) && s == t + a * a) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (2 * a + 1 <= t && !(0 == cond)) && t <= 2 * a + 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((((s == 4 && 2 * a + 1 <= t) && !(0 == cond)) && t <= 2 * a + 1) && t == 3) || ((s == a * 2 + a * a + 1 && 1 == cond) && s == t + a * a) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a) || ((((2 * a + 1 <= t && !(0 == cond)) && t <= 2 * a + 1) && s == t + 1) && t == 3) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (2 * a + 1 <= t && !(0 == cond)) && t <= 2 * a + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: SAFE, OverallTime: 12.6s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 62 SDtfs, 131 SDslu, 149 SDs, 0 SdLazy, 373 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 34 NumberOfFragments, 259 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1129 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 85 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 12120 SizeOfPredicates, 41 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 32/58 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...