./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/geo3.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/geo3.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 621354e75a4dc77844a059d87a5ec1b455e0adaa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:07:24,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:07:24,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:07:24,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:07:24,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:07:24,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:07:24,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:07:24,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:07:24,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:07:24,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:07:24,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:07:24,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:07:24,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:07:24,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:07:24,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:07:24,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:07:24,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:07:24,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:07:24,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:07:24,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:07:24,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:07:24,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:07:24,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:07:24,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:07:24,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:07:24,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:07:24,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:07:24,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:07:24,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:07:24,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:07:24,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:07:24,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:07:24,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:07:24,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:07:24,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:07:24,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:07:24,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:07:24,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:07:24,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:07:24,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:07:24,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:07:24,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:07:24,711 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:07:24,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:07:24,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:07:24,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:07:24,714 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:07:24,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:07:24,714 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:07:24,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:07:24,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:07:24,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:07:24,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:07:24,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:07:24,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:07:24,717 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:07:24,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:07:24,717 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:07:24,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:07:24,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:07:24,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:07:24,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:07:24,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:07:24,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:07:24,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:07:24,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:07:24,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:07:24,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:07:24,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:07:24,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:07:24,721 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 -> 621354e75a4dc77844a059d87a5ec1b455e0adaa [2019-11-28 00:07:25,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:07:25,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:07:25,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:07:25,074 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:07:25,074 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:07:25,075 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/geo3.c [2019-11-28 00:07:25,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0deb713f/21db264dce824f9ab3fd2a4a04aafdf2/FLAGda328d68f [2019-11-28 00:07:25,624 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:07:25,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo3.c [2019-11-28 00:07:25,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0deb713f/21db264dce824f9ab3fd2a4a04aafdf2/FLAGda328d68f [2019-11-28 00:07:26,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0deb713f/21db264dce824f9ab3fd2a4a04aafdf2 [2019-11-28 00:07:26,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:07:26,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:07:26,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:26,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:07:26,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:07:26,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3b2e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26, skipping insertion in model container [2019-11-28 00:07:26,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:07:26,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:07:26,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:26,287 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:07:26,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:26,318 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:07:26,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26 WrapperNode [2019-11-28 00:07:26,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:26,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:26,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:07:26,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:07:26,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:26,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:07:26,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:07:26,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:07:26,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (1/1) ... [2019-11-28 00:07:26,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:07:26,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:07:26,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:07:26,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:07:26,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (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 00:07:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:07:26,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:07:26,678 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:07:26,679 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 00:07:26,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:26 BoogieIcfgContainer [2019-11-28 00:07:26,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:07:26,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:07:26,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:07:26,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:07:26,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:07:26" (1/3) ... [2019-11-28 00:07:26,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343e6ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:26, skipping insertion in model container [2019-11-28 00:07:26,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:26" (2/3) ... [2019-11-28 00:07:26,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343e6ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:26, skipping insertion in model container [2019-11-28 00:07:26,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:26" (3/3) ... [2019-11-28 00:07:26,689 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2019-11-28 00:07:26,700 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:07:26,710 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 00:07:26,725 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 00:07:26,749 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:07:26,749 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:07:26,749 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:07:26,749 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:07:26,749 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:07:26,750 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:07:26,750 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:07:26,750 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:07:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 00:07:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 00:07:26,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:26,768 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 00:07:26,769 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:26,774 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-28 00:07:26,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:26,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945050437] [2019-11-28 00:07:26,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:26,856 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:26,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530645633] [2019-11-28 00:07:26,857 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 00:07:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:26,912 WARN L253 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 00:07:26,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:27,050 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 00:07:27,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945050437] [2019-11-28 00:07:27,051 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:27,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530645633] [2019-11-28 00:07:27,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:27,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:07:27,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622223045] [2019-11-28 00:07:27,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:07:27,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:27,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:07:27,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:07:27,079 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-28 00:07:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:27,177 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-11-28 00:07:27,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:27,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 00:07:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:27,194 INFO L225 Difference]: With dead ends: 37 [2019-11-28 00:07:27,195 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 00:07:27,201 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 00:07:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 00:07:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 00:07:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 00:07:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-28 00:07:27,249 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2019-11-28 00:07:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:27,251 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-28 00:07:27,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:07:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-28 00:07:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:07:27,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:27,252 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-28 00:07:27,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:27,457 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1360983589, now seen corresponding path program 1 times [2019-11-28 00:07:27,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:27,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547252740] [2019-11-28 00:07:27,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:27,466 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:27,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056160056] [2019-11-28 00:07:27,468 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 00:07:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:27,513 WARN L253 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 00:07:27,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:27,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547252740] [2019-11-28 00:07:27,591 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:27,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056160056] [2019-11-28 00:07:27,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:27,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 00:07:27,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462982305] [2019-11-28 00:07:27,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:27,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:27,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:27,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:27,596 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-11-28 00:07:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:27,672 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-28 00:07:27,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:07:27,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-28 00:07:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:27,674 INFO L225 Difference]: With dead ends: 23 [2019-11-28 00:07:27,674 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 00:07:27,675 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 00:07:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 00:07:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-28 00:07:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 00:07:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-28 00:07:27,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-28 00:07:27,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:27,682 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-28 00:07:27,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:27,683 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-28 00:07:27,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 00:07:27,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:27,684 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-28 00:07:27,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:27,888 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash -565900116, now seen corresponding path program 2 times [2019-11-28 00:07:27,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:27,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306480282] [2019-11-28 00:07:27,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:27,895 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:27,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883275457] [2019-11-28 00:07:27,896 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 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 00:07:27,934 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:07:27,935 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:27,936 WARN L253 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-28 00:07:27,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:28,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306480282] [2019-11-28 00:07:28,093 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:28,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883275457] [2019-11-28 00:07:28,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:28,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-28 00:07:28,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425514261] [2019-11-28 00:07:28,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:07:28,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:28,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:07:28,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:07:28,097 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2019-11-28 00:07:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:30,326 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-28 00:07:30,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:30,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-28 00:07:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:30,327 INFO L225 Difference]: With dead ends: 26 [2019-11-28 00:07:30,327 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 00:07:30,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:07:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 00:07:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-11-28 00:07:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 00:07:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-28 00:07:30,334 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2019-11-28 00:07:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:30,335 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-28 00:07:30,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:07:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-28 00:07:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:07:30,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:30,337 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-11-28 00:07:30,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:30,541 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:30,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash -978793413, now seen corresponding path program 3 times [2019-11-28 00:07:30,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:30,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767362180] [2019-11-28 00:07:30,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:30,551 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:30,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428754756] [2019-11-28 00:07:30,552 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 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 00:07:30,596 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 00:07:30,596 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:30,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-28 00:07:30,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:32,665 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-28 00:07:32,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:34,687 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (= (+ (* (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ c_ULTIMATE.start_main_~a~0 (* c_ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0)))) is different from true [2019-11-28 00:07:42,306 WARN L192 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2019-11-28 00:07:42,309 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:46,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2019-11-28 00:07:46,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767362180] [2019-11-28 00:07:46,391 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:46,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428754756] [2019-11-28 00:07:46,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:46,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-28 00:07:46,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180306293] [2019-11-28 00:07:46,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:07:46,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:46,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:07:46,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=27, Unknown=3, NotChecked=10, Total=56 [2019-11-28 00:07:46,398 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2019-11-28 00:07:52,935 WARN L192 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2019-11-28 00:07:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:52,965 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 00:07:52,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:52,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-11-28 00:07:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:52,967 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:07:52,967 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:07:52,969 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=30, Invalid=43, Unknown=3, NotChecked=14, Total=90 [2019-11-28 00:07:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:07:52,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:07:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:07:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:07:52,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-28 00:07:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:52,970 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:07:52,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:07:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:07:52,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:07:53,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:53,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:07:53,772 WARN L192 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2019-11-28 00:07:53,813 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:07:53,813 INFO L242 CegarLoopResult]: At program point L27-2(lines 27 36) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~y~0 1)) (and (exists ((v_ULTIMATE.start_main_~x~0_14 Int) (v_ULTIMATE.start_main_~y~0_13 Int)) (and (= (+ (* v_ULTIMATE.start_main_~x~0_14 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~z~0 v_ULTIMATE.start_main_~x~0_14)) (+ v_ULTIMATE.start_main_~x~0_14 (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) v_ULTIMATE.start_main_~y~0_13))) (= ULTIMATE.start_main_~y~0 (* v_ULTIMATE.start_main_~y~0_13 ULTIMATE.start_main_~z~0)))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2019-11-28 00:07:53,814 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-28 00:07:53,814 INFO L246 CegarLoopResult]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2019-11-28 00:07:53,814 INFO L246 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-11-28 00:07:53,814 INFO L246 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2019-11-28 00:07:53,814 INFO L249 CegarLoopResult]: At program point L38(lines 16 39) the Hoare annotation is: true [2019-11-28 00:07:53,814 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:07:53,815 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:07:53,815 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-28 00:07:53,816 INFO L246 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-11-28 00:07:53,816 INFO L242 CegarLoopResult]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (exists ((v_ULTIMATE.start_main_~x~0_14 Int) (v_ULTIMATE.start_main_~y~0_13 Int)) (and (= (+ (* v_ULTIMATE.start_main_~x~0_14 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~z~0 v_ULTIMATE.start_main_~x~0_14)) (+ v_ULTIMATE.start_main_~x~0_14 (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) v_ULTIMATE.start_main_~y~0_13))) (= ULTIMATE.start_main_~y~0 (* v_ULTIMATE.start_main_~y~0_13 ULTIMATE.start_main_~z~0)))) .cse0) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~y~0 1)))) [2019-11-28 00:07:53,816 INFO L246 CegarLoopResult]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2019-11-28 00:07:53,817 INFO L249 CegarLoopResult]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2019-11-28 00:07:53,828 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,830 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,830 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,831 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,831 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,839 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,839 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,841 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,841 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,842 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,842 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,842 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,843 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,844 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,844 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,844 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,845 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:07:53 BoogieIcfgContainer [2019-11-28 00:07:53,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:07:53,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:07:53,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:07:53,849 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:07:53,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:26" (3/4) ... [2019-11-28 00:07:53,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:07:53,866 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:07:53,866 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:07:53,897 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (a == x && y == 1) || ((\exists v_ULTIMATE.start_main_~x~0_14 : int, v_ULTIMATE.start_main_~y~0_13 : int :: (v_ULTIMATE.start_main_~x~0_14 * z + a == x && a + z * v_ULTIMATE.start_main_~x~0_14 == v_ULTIMATE.start_main_~x~0_14 + a * z * v_ULTIMATE.start_main_~y~0_13) && y == v_ULTIMATE.start_main_~y~0_13 * z) && 1 == cond) [2019-11-28 00:07:53,898 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_ULTIMATE.start_main_~x~0_14 : int, v_ULTIMATE.start_main_~y~0_13 : int :: (v_ULTIMATE.start_main_~x~0_14 * z + a == x && a + z * v_ULTIMATE.start_main_~x~0_14 == v_ULTIMATE.start_main_~x~0_14 + a * z * v_ULTIMATE.start_main_~y~0_13) && y == v_ULTIMATE.start_main_~y~0_13 * z) && 1 == cond) || ((1 == cond && a == x) && y == 1) [2019-11-28 00:07:53,919 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:07:53,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:07:53,921 INFO L168 Benchmark]: Toolchain (without parser) took 27886.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 957.7 MB in the beginning and 969.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 137.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:53,922 INFO L168 Benchmark]: CDTParser took 0.27 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 00:07:53,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.28 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 945.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:53,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -200.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:53,924 INFO L168 Benchmark]: Boogie Preprocessor took 22.90 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:53,925 INFO L168 Benchmark]: RCFGBuilder took 243.32 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:53,926 INFO L168 Benchmark]: TraceAbstraction took 27166.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.1 MB in the end (delta: 150.9 MB). Peak memory consumption was 150.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:53,927 INFO L168 Benchmark]: Witness Printer took 71.03 ms. Allocated memory is still 1.2 GB. Free memory was 976.1 MB in the beginning and 969.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:53,931 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 283.28 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 945.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -200.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.90 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 243.32 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27166.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.1 MB in the end (delta: 150.9 MB). Peak memory consumption was 150.9 MB. Max. memory is 11.5 GB. * Witness Printer took 71.03 ms. Allocated memory is still 1.2 GB. Free memory was 976.1 MB in the beginning and 969.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant [2019-11-28 00:07:53,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,946 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,946 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,948 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,948 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] Derived loop invariant: ((\exists v_ULTIMATE.start_main_~x~0_14 : int, v_ULTIMATE.start_main_~y~0_13 : int :: (v_ULTIMATE.start_main_~x~0_14 * z + a == x && a + z * v_ULTIMATE.start_main_~x~0_14 == v_ULTIMATE.start_main_~x~0_14 + a * z * v_ULTIMATE.start_main_~y~0_13) && y == v_ULTIMATE.start_main_~y~0_13 * z) && 1 == cond) || ((1 == cond && a == x) && y == 1) - InvariantResult [Line: 27]: Loop Invariant [2019-11-28 00:07:53,949 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,949 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,949 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,950 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,950 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,951 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,951 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,951 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_14,QUANTIFIED] [2019-11-28 00:07:53,952 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] [2019-11-28 00:07:53,952 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~y~0_13,QUANTIFIED] Derived loop invariant: (a == x && y == 1) || ((\exists v_ULTIMATE.start_main_~x~0_14 : int, v_ULTIMATE.start_main_~y~0_13 : int :: (v_ULTIMATE.start_main_~x~0_14 * z + a == x && a + z * v_ULTIMATE.start_main_~x~0_14 == v_ULTIMATE.start_main_~x~0_14 + a * z * v_ULTIMATE.start_main_~y~0_13) && y == v_ULTIMATE.start_main_~y~0_13 * z) && 1 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Result: SAFE, OverallTime: 26.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 23 SDtfs, 37 SDslu, 52 SDs, 0 SdLazy, 88 SolverSat, 34 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 83 HoareAnnotationTreeSize, 4 FomulaSimplifications, 176 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 30 ConstructedInterpolants, 8 QuantifiedInterpolants, 3432 SizeOfPredicates, 36 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 7/24 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...