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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-crafted/zero_sum1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:51:44,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:51:44,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:51:44,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:51:44,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:51:44,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:51:44,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:51:44,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:51:44,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:51:44,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:51:44,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:51:44,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:51:44,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:51:44,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:51:44,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:51:44,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:51:44,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:51:44,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:51:44,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:51:44,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:51:44,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:51:44,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:51:44,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:51:44,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:51:44,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:51:44,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:51:44,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:51:44,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:51:44,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:51:44,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:51:44,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:51:44,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:51:44,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:51:44,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:51:44,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:51:44,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:51:44,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:51:44,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:51:44,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:51:44,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:51:44,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:51:44,459 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 [2019-10-14 23:51:44,487 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:51:44,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:51:44,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:51:44,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:51:44,489 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:51:44,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:51:44,489 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:51:44,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:51:44,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:51:44,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:51:44,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:51:44,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:51:44,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:51:44,490 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:51:44,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:51:44,491 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:51:44,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:51:44,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:51:44,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:51:44,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:51:44,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:51:44,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:51:44,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:51:44,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:51:44,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:51:44,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:51:44,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:51:44,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:51:44,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-14 23:51:44,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:51:44,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:51:44,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:51:44,777 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:51:44,777 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:51:44,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-10-14 23:51:44,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8878024/e59b87218d0947f7b1f7644ad6f9ce2e/FLAG13bb0de94 [2019-10-14 23:51:45,263 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:51:45,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-10-14 23:51:45,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8878024/e59b87218d0947f7b1f7644ad6f9ce2e/FLAG13bb0de94 [2019-10-14 23:51:45,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8878024/e59b87218d0947f7b1f7644ad6f9ce2e [2019-10-14 23:51:45,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:51:45,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:51:45,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:45,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:51:45,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:51:45,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599a6431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45, skipping insertion in model container [2019-10-14 23:51:45,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,705 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:51:45,728 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:51:45,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:45,961 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:51:45,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:46,002 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:51:46,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46 WrapperNode [2019-10-14 23:51:46,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:46,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:51:46,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:51:46,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:51:46,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (1/1) ... [2019-10-14 23:51:46,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (1/1) ... [2019-10-14 23:51:46,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (1/1) ... [2019-10-14 23:51:46,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (1/1) ... [2019-10-14 23:51:46,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (1/1) ... [2019-10-14 23:51:46,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (1/1) ... [2019-10-14 23:51:46,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (1/1) ... [2019-10-14 23:51:46,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:51:46,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:51:46,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:51:46,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:51:46,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (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 [2019-10-14 23:51:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:51:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:51:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:51:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:51:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:51:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:51:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:51:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-10-14 23:51:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:51:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:51:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:51:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:51:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:51:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:51:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:51:46,420 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:51:46,420 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 23:51:46,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:46 BoogieIcfgContainer [2019-10-14 23:51:46,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:51:46,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:51:46,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:51:46,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:51:46,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:51:45" (1/3) ... [2019-10-14 23:51:46,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346862f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:46, skipping insertion in model container [2019-10-14 23:51:46,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:46" (2/3) ... [2019-10-14 23:51:46,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346862f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:46, skipping insertion in model container [2019-10-14 23:51:46,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:46" (3/3) ... [2019-10-14 23:51:46,431 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum1.c [2019-10-14 23:51:46,441 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:51:46,452 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:51:46,484 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:51:46,528 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:51:46,528 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:51:46,529 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:51:46,529 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:51:46,529 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:51:46,529 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:51:46,530 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:51:46,530 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:51:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-14 23:51:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:51:46,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:46,568 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:46,570 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash -714575113, now seen corresponding path program 1 times [2019-10-14 23:51:46,588 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:46,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812806591] [2019-10-14 23:51:46,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:46,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:46,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:51:46,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812806591] [2019-10-14 23:51:46,729 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:46,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:51:46,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097053907] [2019-10-14 23:51:46,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:51:46,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:46,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:51:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:51:46,757 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-14 23:51:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:46,792 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2019-10-14 23:51:46,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:51:46,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-14 23:51:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:46,805 INFO L225 Difference]: With dead ends: 47 [2019-10-14 23:51:46,806 INFO L226 Difference]: Without dead ends: 20 [2019-10-14 23:51:46,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:51:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-14 23:51:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-14 23:51:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-14 23:51:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-14 23:51:46,852 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-10-14 23:51:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:46,852 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-14 23:51:46,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:51:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-14 23:51:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:51:46,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:46,854 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:46,854 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:46,855 INFO L82 PathProgramCache]: Analyzing trace with hash 504621157, now seen corresponding path program 1 times [2019-10-14 23:51:46,855 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:46,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927357661] [2019-10-14 23:51:46,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:46,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:46,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:51:46,983 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927357661] [2019-10-14 23:51:46,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:46,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:51:46,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218525712] [2019-10-14 23:51:46,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:51:46,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:46,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:51:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:51:46,987 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2019-10-14 23:51:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:47,037 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-14 23:51:47,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:51:47,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-14 23:51:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:47,039 INFO L225 Difference]: With dead ends: 28 [2019-10-14 23:51:47,039 INFO L226 Difference]: Without dead ends: 23 [2019-10-14 23:51:47,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:51:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-14 23:51:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-14 23:51:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-14 23:51:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-14 23:51:47,046 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2019-10-14 23:51:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:47,047 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-14 23:51:47,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:51:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-14 23:51:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:51:47,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:47,048 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:47,049 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:47,049 INFO L82 PathProgramCache]: Analyzing trace with hash 626778659, now seen corresponding path program 1 times [2019-10-14 23:51:47,050 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:47,050 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37660693] [2019-10-14 23:51:47,050 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,050 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:51:47,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37660693] [2019-10-14 23:51:47,128 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:47,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:51:47,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936014677] [2019-10-14 23:51:47,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:51:47,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:51:47,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:47,133 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-10-14 23:51:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:47,173 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-10-14 23:51:47,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:51:47,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-14 23:51:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:47,175 INFO L225 Difference]: With dead ends: 39 [2019-10-14 23:51:47,176 INFO L226 Difference]: Without dead ends: 25 [2019-10-14 23:51:47,177 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 [2019-10-14 23:51:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-14 23:51:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-14 23:51:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-14 23:51:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-14 23:51:47,186 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2019-10-14 23:51:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:47,187 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-14 23:51:47,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:51:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-14 23:51:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:51:47,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:47,190 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:47,190 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1697854689, now seen corresponding path program 1 times [2019-10-14 23:51:47,192 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:47,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784523001] [2019-10-14 23:51:47,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:51:47,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784523001] [2019-10-14 23:51:47,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:47,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:51:47,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364608922] [2019-10-14 23:51:47,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:51:47,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:47,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:51:47,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:47,261 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2019-10-14 23:51:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:47,313 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-14 23:51:47,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:51:47,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-14 23:51:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:47,315 INFO L225 Difference]: With dead ends: 34 [2019-10-14 23:51:47,315 INFO L226 Difference]: Without dead ends: 25 [2019-10-14 23:51:47,316 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-14 23:51:47,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-10-14 23:51:47,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-14 23:51:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-14 23:51:47,322 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2019-10-14 23:51:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:47,322 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-14 23:51:47,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:51:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-14 23:51:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 23:51:47,323 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:47,323 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:47,324 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:47,325 INFO L82 PathProgramCache]: Analyzing trace with hash 661319647, now seen corresponding path program 1 times [2019-10-14 23:51:47,325 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:47,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960304031] [2019-10-14 23:51:47,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:51:47,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960304031] [2019-10-14 23:51:47,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812946133] [2019-10-14 23:51:47,425 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 [2019-10-14 23:51:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:47,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:51:47,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:51:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:51:47,559 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:51:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:51:47,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1177051242] [2019-10-14 23:51:47,636 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 23 [2019-10-14 23:51:47,679 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:51:47,679 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:51:47,758 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:51:47,760 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 26 variables. [2019-10-14 23:51:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:47,764 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:51:47,797 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-14 23:51:47,798 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:51:47,806 INFO L553 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-10-14 23:51:47,806 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:51:47,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:51:47,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 8 [2019-10-14 23:51:47,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963099079] [2019-10-14 23:51:47,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:51:47,809 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:47,809 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:51:47,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:51:47,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:47,810 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-10-14 23:51:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:47,813 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-14 23:51:47,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:51:47,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-14 23:51:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:47,814 INFO L225 Difference]: With dead ends: 23 [2019-10-14 23:51:47,814 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:51:47,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:51:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:51:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:51:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:51:47,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-14 23:51:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:47,816 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:51:47,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:51:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:51:47,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:51:48,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:48,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:51:48,105 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,105 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:48,105 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,105 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,106 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) [2019-10-14 23:51:48,106 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:48,106 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,106 INFO L443 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-10-14 23:51:48,106 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2019-10-14 23:51:48,106 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 34) no Hoare annotation was computed. [2019-10-14 23:51:48,107 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 30) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:48,107 INFO L439 ceAbstractionStarter]: At program point L27-4(lines 27 30) the Hoare annotation is: (or (= main_~sum~0 0) (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:48,107 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 20) no Hoare annotation was computed. [2019-10-14 23:51:48,110 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 20) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:48,111 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 20) no Hoare annotation was computed. [2019-10-14 23:51:48,111 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 34) no Hoare annotation was computed. [2019-10-14 23:51:48,111 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 32) no Hoare annotation was computed. [2019-10-14 23:51:48,111 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 32) no Hoare annotation was computed. [2019-10-14 23:51:48,111 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 34) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:48,111 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-10-14 23:51:48,112 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 25) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:48,112 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2019-10-14 23:51:48,112 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-14 23:51:48,112 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-14 23:51:48,113 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-14 23:51:48,114 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-14 23:51:48,114 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-14 23:51:48,114 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-14 23:51:48,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:51:48 BoogieIcfgContainer [2019-10-14 23:51:48,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:51:48,139 INFO L168 Benchmark]: Toolchain (without parser) took 2450.59 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 103.9 MB in the beginning and 189.6 MB in the end (delta: -85.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,141 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.36 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 93.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,149 INFO L168 Benchmark]: Boogie Preprocessor took 122.27 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.6 MB in the beginning and 180.0 MB in the end (delta: -86.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,150 INFO L168 Benchmark]: RCFGBuilder took 296.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 165.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,150 INFO L168 Benchmark]: TraceAbstraction took 1711.29 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 165.1 MB in the beginning and 189.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,161 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.36 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 93.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.27 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.6 MB in the beginning and 180.0 MB in the end (delta: -86.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 165.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1711.29 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 165.1 MB in the beginning and 189.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 27]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 23 SDslu, 71 SDs, 0 SdLazy, 45 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 14 NumberOfFragments, 79 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 4027 SizeOfPredicates, 3 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 9/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 128, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9523809523809523, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8571428571428571, AVG_WEAKENED_CONJUNCTS: 0.7619047619047619, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...