java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:59:08,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:59:08,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:59:08,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:59:08,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:59:08,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:59:08,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:59:08,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:59:08,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:59:08,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:59:08,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:59:08,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:59:08,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:59:08,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:59:08,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:59:08,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:59:08,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:59:08,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:59:08,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:59:08,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:59:08,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:59:08,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:59:08,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:59:08,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:59:08,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:59:08,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:59:08,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:59:08,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:59:08,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:59:08,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:59:08,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:59:08,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:59:08,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:59:08,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:59:08,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:59:08,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:59:08,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:59:08,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:59:08,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:59:08,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:59:08,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:59:08,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:59:08,593 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:59:08,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:59:08,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:59:08,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:59:08,596 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:59:08,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:59:08,597 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:59:08,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:59:08,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:59:08,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:59:08,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:59:08,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:59:08,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:59:08,598 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:59:08,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:59:08,598 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:59:08,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:59:08,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:59:08,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:59:08,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:59:08,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:59:08,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:59:08,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:59:08,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:59:08,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:59:08,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:59:08,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:59:08,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:59:08,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:59:08,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:59:08,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:59:08,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:59:08,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:59:08,928 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:59:08,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2019-10-13 22:59:09,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6b95627/8be5813da6c5464394a4c8f892277229/FLAGdbd764b53 [2019-10-13 22:59:09,482 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:59:09,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2019-10-13 22:59:09,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6b95627/8be5813da6c5464394a4c8f892277229/FLAGdbd764b53 [2019-10-13 22:59:09,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6b95627/8be5813da6c5464394a4c8f892277229 [2019-10-13 22:59:09,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:59:09,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:59:09,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:09,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:59:09,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:59:09,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:09" (1/1) ... [2019-10-13 22:59:09,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321dbed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:09, skipping insertion in model container [2019-10-13 22:59:09,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:09" (1/1) ... [2019-10-13 22:59:09,877 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:59:09,895 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:59:10,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:10,078 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:59:10,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:10,113 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:59:10,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10 WrapperNode [2019-10-13 22:59:10,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:10,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:59:10,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:59:10,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:59:10,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (1/1) ... [2019-10-13 22:59:10,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (1/1) ... [2019-10-13 22:59:10,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (1/1) ... [2019-10-13 22:59:10,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (1/1) ... [2019-10-13 22:59:10,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (1/1) ... [2019-10-13 22:59:10,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (1/1) ... [2019-10-13 22:59:10,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (1/1) ... [2019-10-13 22:59:10,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:59:10,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:59:10,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:59:10,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:59:10,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (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 [2019-10-13 22:59:10,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:59:10,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:59:10,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:59:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:59:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:59:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:59:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:59:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:59:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:59:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:59:10,484 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:59:10,484 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:59:10,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:10 BoogieIcfgContainer [2019-10-13 22:59:10,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:59:10,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:59:10,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:59:10,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:59:10,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:59:09" (1/3) ... [2019-10-13 22:59:10,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f852472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:10, skipping insertion in model container [2019-10-13 22:59:10,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:10" (2/3) ... [2019-10-13 22:59:10,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f852472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:10, skipping insertion in model container [2019-10-13 22:59:10,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:10" (3/3) ... [2019-10-13 22:59:10,496 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2019-10-13 22:59:10,510 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:59:10,527 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:59:10,554 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:59:10,587 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:59:10,587 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:59:10,587 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:59:10,588 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:59:10,588 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:59:10,588 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:59:10,588 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:59:10,588 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:59:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-13 22:59:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 22:59:10,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:10,616 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:10,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:10,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1330646415, now seen corresponding path program 1 times [2019-10-13 22:59:10,635 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:10,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549122594] [2019-10-13 22:59:10,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:10,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:10,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:10,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549122594] [2019-10-13 22:59:10,789 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:59:10,789 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:59:10,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723031267] [2019-10-13 22:59:10,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:59:10,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:59:10,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:59:10,811 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-10-13 22:59:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:10,851 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-10-13 22:59:10,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:59:10,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-13 22:59:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:10,864 INFO L225 Difference]: With dead ends: 25 [2019-10-13 22:59:10,864 INFO L226 Difference]: Without dead ends: 12 [2019-10-13 22:59:10,868 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:59:10,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-13 22:59:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-13 22:59:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-13 22:59:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-13 22:59:10,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-13 22:59:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:10,921 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-13 22:59:10,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:59:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-13 22:59:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 22:59:10,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:10,925 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:10,927 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1699571622, now seen corresponding path program 1 times [2019-10-13 22:59:10,930 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:10,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806515750] [2019-10-13 22:59:10,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:10,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:10,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:11,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806515750] [2019-10-13 22:59:11,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82658764] [2019-10-13 22:59:11,070 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 [2019-10-13 22:59:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:11,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 22:59:11,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:59:11,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:59:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:11,198 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:59:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:11,231 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:59:11,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-13 22:59:11,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664192412] [2019-10-13 22:59:11,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:59:11,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:11,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:59:11,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-13 22:59:11,235 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2019-10-13 22:59:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:11,289 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-10-13 22:59:11,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:59:11,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-13 22:59:11,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:11,290 INFO L225 Difference]: With dead ends: 12 [2019-10-13 22:59:11,290 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 22:59:11,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:59:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 22:59:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 22:59:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 22:59:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 22:59:11,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-13 22:59:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:11,293 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 22:59:11,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:59:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 22:59:11,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 22:59:11,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:11,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 22:59:11,540 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:59:11,541 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:11,541 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:11,541 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 22:59:11,541 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:59:11,542 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 22:59:11,542 INFO L439 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ main_~main__x~0 2) main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2019-10-13 22:59:11,542 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: true [2019-10-13 22:59:11,542 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2019-10-13 22:59:11,543 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-10-13 22:59:11,543 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2019-10-13 22:59:11,543 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2019-10-13 22:59:11,543 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2019-10-13 22:59:11,543 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-10-13 22:59:11,544 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-10-13 22:59:11,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:59:11 BoogieIcfgContainer [2019-10-13 22:59:11,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 22:59:11,560 INFO L168 Benchmark]: Toolchain (without parser) took 1702.09 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 123.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:11,562 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 22:59:11,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.76 ms. Allocated memory is still 145.2 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:11,564 INFO L168 Benchmark]: Boogie Preprocessor took 118.76 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 91.9 MB in the beginning and 180.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:11,565 INFO L168 Benchmark]: RCFGBuilder took 252.37 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 169.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:11,566 INFO L168 Benchmark]: TraceAbstraction took 1070.81 ms. Allocated memory is still 201.9 MB. Free memory was 169.0 MB in the beginning and 123.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:11,570 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.76 ms. Allocated memory is still 145.2 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.76 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 91.9 MB in the beginning and 180.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 252.37 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 169.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1070.81 ms. Allocated memory is still 201.9 MB. Free memory was 169.0 MB in the beginning and 123.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 6 SDslu, 28 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 829 SizeOfPredicates, 6 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 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...