./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/ps3.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/ps3.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 a0eae65bd4a214f811a2a4c3e828509d9c15c014 ......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:07:46,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:07:46,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:07:46,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:07:46,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:07:46,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:07:46,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:07:46,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:07:46,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:07:46,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:07:46,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:07:46,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:07:46,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:07:46,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:07:46,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:07:46,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:07:46,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:07:46,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:07:46,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:07:46,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:07:46,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:07:46,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:07:46,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:07:46,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:07:46,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:07:46,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:07:46,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:07:46,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:07:46,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:07:46,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:07:46,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:07:46,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:07:46,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:07:46,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:07:46,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:07:46,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:07:46,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:07:46,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:07:46,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:07:46,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:07:46,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:07:46,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:07:46,788 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:07:46,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:07:46,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:07:46,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:07:46,790 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:07:46,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:07:46,791 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:07:46,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:07:46,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:07:46,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:07:46,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:07:46,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:07:46,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:07:46,793 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:07:46,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:07:46,794 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:07:46,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:07:46,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:07:46,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:07:46,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:07:46,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:07:46,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:07:46,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:07:46,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:07:46,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:07:46,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:07:46,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:07:46,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:07:46,798 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 -> a0eae65bd4a214f811a2a4c3e828509d9c15c014 [2019-11-28 00:07:47,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:07:47,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:07:47,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:07:47,142 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:07:47,142 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:07:47,143 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/ps3.c [2019-11-28 00:07:47,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f0a6f73/50498158eae444b083f44c00fa350350/FLAG541fae790 [2019-11-28 00:07:47,598 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:07:47,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/ps3.c [2019-11-28 00:07:47,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f0a6f73/50498158eae444b083f44c00fa350350/FLAG541fae790 [2019-11-28 00:07:48,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f0a6f73/50498158eae444b083f44c00fa350350 [2019-11-28 00:07:48,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:07:48,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:07:48,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:48,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:07:48,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:07:48,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac4b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48, skipping insertion in model container [2019-11-28 00:07:48,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:07:48,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:07:48,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:48,312 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:07:48,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:48,353 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:07:48,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48 WrapperNode [2019-11-28 00:07:48,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:48,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:48,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:07:48,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:07:48,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:48,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:07:48,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:07:48,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:07:48,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (1/1) ... [2019-11-28 00:07:48,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:07:48,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:07:48,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:07:48,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:07:48,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (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 00:07:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:07:48,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:07:48,717 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:07:48,717 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 00:07:48,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:48 BoogieIcfgContainer [2019-11-28 00:07:48,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:07:48,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:07:48,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:07:48,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:07:48,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:07:48" (1/3) ... [2019-11-28 00:07:48,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3360f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:48, skipping insertion in model container [2019-11-28 00:07:48,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:48" (2/3) ... [2019-11-28 00:07:48,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3360f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:48, skipping insertion in model container [2019-11-28 00:07:48,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:48" (3/3) ... [2019-11-28 00:07:48,725 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2019-11-28 00:07:48,732 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:07:48,739 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 00:07:48,751 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 00:07:48,775 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:07:48,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:07:48,776 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:07:48,776 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:07:48,776 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:07:48,776 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:07:48,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:07:48,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:07:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 00:07:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 00:07:48,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:48,794 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 00:07:48,794 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:48,799 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-28 00:07:48,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:48,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124711387] [2019-11-28 00:07:48,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:48,877 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:48,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026693214] [2019-11-28 00:07:48,878 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 00:07:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:48,917 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 00:07:48,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:49,004 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 00:07:49,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124711387] [2019-11-28 00:07:49,005 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:49,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026693214] [2019-11-28 00:07:49,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:49,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:07:49,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739923956] [2019-11-28 00:07:49,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:07:49,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:49,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:07:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:07:49,038 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-28 00:07:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:49,198 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-11-28 00:07:49,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:49,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 00:07:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:49,211 INFO L225 Difference]: With dead ends: 37 [2019-11-28 00:07:49,211 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 00:07:49,214 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 00:07:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 00:07:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 00:07:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 00:07:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-28 00:07:49,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2019-11-28 00:07:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:49,246 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-28 00:07:49,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:07:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-28 00:07:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:07:49,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:49,247 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-28 00:07:49,451 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:49,451 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:49,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1360983589, now seen corresponding path program 1 times [2019-11-28 00:07:49,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:49,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403776520] [2019-11-28 00:07:49,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:49,460 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:49,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818966916] [2019-11-28 00:07:49,462 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 00:07:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:49,490 WARN L253 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-28 00:07:49,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:49,599 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 00:07:49,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403776520] [2019-11-28 00:07:49,600 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:49,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818966916] [2019-11-28 00:07:49,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:49,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 00:07:49,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181962774] [2019-11-28 00:07:49,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:49,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:49,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:49,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:49,605 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-11-28 00:07:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:49,680 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-28 00:07:49,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:07:49,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-28 00:07:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:49,683 INFO L225 Difference]: With dead ends: 23 [2019-11-28 00:07:49,683 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 00:07:49,684 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 00:07:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-28 00:07:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 00:07:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-28 00:07:49,695 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-28 00:07:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:49,696 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-28 00:07:49,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:49,697 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-28 00:07:49,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 00:07:49,698 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:49,698 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-28 00:07:49,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:49,900 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:49,901 INFO L82 PathProgramCache]: Analyzing trace with hash -565900116, now seen corresponding path program 2 times [2019-11-28 00:07:49,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:49,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924767555] [2019-11-28 00:07:49,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:49,908 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:49,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459532279] [2019-11-28 00:07:49,908 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 00:07:49,946 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:07:49,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:49,947 WARN L253 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-28 00:07:49,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:50,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:52,101 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_ULTIMATE.start_main_~y~0 (- 1)))) (let ((.cse0 (* (+ (* c_ULTIMATE.start_main_~y~0 3) (- 3)) .cse2)) (.cse1 (* (* (+ (* c_ULTIMATE.start_main_~y~0 2) (- 2)) .cse2) .cse2))) (and (<= c_ULTIMATE.start_main_~x~0 (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (div (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 (- 1)) 6))) (= 0 (mod (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 5) 6)) (= 1 c_ULTIMATE.start_main_~y~0)))) is different from true [2019-11-28 00:07:52,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-11-28 00:07:52,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924767555] [2019-11-28 00:07:52,872 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:52,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459532279] [2019-11-28 00:07:52,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:52,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-28 00:07:52,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098169972] [2019-11-28 00:07:52,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 00:07:52,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:52,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 00:07:52,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=56, Unknown=1, NotChecked=14, Total=90 [2019-11-28 00:07:52,876 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2019-11-28 00:07:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:53,236 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-28 00:07:53,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:53,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-11-28 00:07:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:53,238 INFO L225 Difference]: With dead ends: 26 [2019-11-28 00:07:53,238 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 00:07:53,239 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=34, Invalid=101, Unknown=1, NotChecked=20, Total=156 [2019-11-28 00:07:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 00:07:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-11-28 00:07:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 00:07:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-28 00:07:53,246 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2019-11-28 00:07:53,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:53,247 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-28 00:07:53,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 00:07:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-28 00:07:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 00:07:53,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:53,248 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-11-28 00:07:53,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:53,453 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash -978793413, now seen corresponding path program 3 times [2019-11-28 00:07:53,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:53,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895211023] [2019-11-28 00:07:53,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:53,464 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:53,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535720470] [2019-11-28 00:07:53,465 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 00:07:53,500 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 00:07:53,500 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:53,501 WARN L253 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-28 00:07:53,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:53,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:53,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 00:07:53,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895211023] [2019-11-28 00:07:53,800 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:53,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535720470] [2019-11-28 00:07:53,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:53,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-28 00:07:53,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314750363] [2019-11-28 00:07:53,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:53,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:53,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:53,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:53,805 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2019-11-28 00:07:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:53,995 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 00:07:53,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:53,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-28 00:07:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:53,996 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:07:53,997 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:07:53,997 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:07:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:07:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:07:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:07:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:07:53,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-28 00:07:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:53,999 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:07:53,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:07:53,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:07:54,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:54,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:07:54,312 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:07:54,312 INFO L249 CegarLoopResult]: At program point L31(lines 12 32) the Hoare annotation is: true [2019-11-28 00:07:54,312 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-28 00:07:54,313 INFO L246 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-11-28 00:07:54,313 INFO L242 CegarLoopResult]: At program point L5-2(lines 23 24) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)))) [2019-11-28 00:07:54,313 INFO L246 CegarLoopResult]: For program point L5-3(lines 5 8) no Hoare annotation was computed. [2019-11-28 00:07:54,313 INFO L249 CegarLoopResult]: At program point L5-5(lines 4 10) the Hoare annotation is: true [2019-11-28 00:07:54,313 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:07:54,313 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:07:54,314 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-28 00:07:54,314 INFO L242 CegarLoopResult]: At program point L20-2(lines 20 29) the Hoare annotation is: (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))))) (or (and (= ULTIMATE.start_main_~y~0 0) .cse0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) [2019-11-28 00:07:54,314 INFO L246 CegarLoopResult]: For program point L20-3(lines 20 29) no Hoare annotation was computed. [2019-11-28 00:07:54,314 INFO L246 CegarLoopResult]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-11-28 00:07:54,314 INFO L246 CegarLoopResult]: For program point L6-1(lines 6 7) no Hoare annotation was computed. [2019-11-28 00:07:54,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:07:54 BoogieIcfgContainer [2019-11-28 00:07:54,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:07:54,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:07:54,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:07:54,332 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:07:54,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:48" (3/4) ... [2019-11-28 00:07:54,336 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:07:54,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:07:54,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:07:54,403 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:07:54,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:07:54,406 INFO L168 Benchmark]: Toolchain (without parser) took 6376.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 961.7 MB in the beginning and 971.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 141.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:54,406 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 00:07:54,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.78 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:54,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:54,411 INFO L168 Benchmark]: Boogie Preprocessor took 32.31 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:54,412 INFO L168 Benchmark]: RCFGBuilder took 236.66 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:54,412 INFO L168 Benchmark]: TraceAbstraction took 5612.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.3 MB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:54,413 INFO L168 Benchmark]: Witness Printer took 71.05 ms. Allocated memory is still 1.2 GB. Free memory was 978.3 MB in the beginning and 971.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:54,419 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 324.78 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 93.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.31 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 236.66 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5612.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.3 MB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 11.5 GB. * Witness Printer took 71.05 ms. Allocated memory is still 1.2 GB. Free memory was 978.3 MB in the beginning and 971.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 7]: 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: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (y == 0 && x * 6 == y * 3 * y + y + y * 2 * y * y) || (1 == cond && x * 6 == y * 3 * y + y + y * 2 * y * y) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 == cond && x * 6 == y * 3 * y + y + y * 2 * y * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Result: SAFE, OverallTime: 5.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 24 SDtfs, 40 SDslu, 58 SDs, 0 SdLazy, 97 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.6s 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, 69 HoareAnnotationTreeSize, 4 FomulaSimplifications, 167 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 3915 SizeOfPredicates, 28 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 9/24 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...