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/loops/nec40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:46:11,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:46:11,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:46:11,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:46:11,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:46:11,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:46:11,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:46:11,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:46:11,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:46:11,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:46:11,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:46:11,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:46:11,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:46:11,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:46:11,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:46:11,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:46:11,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:46:11,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:46:11,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:46:11,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:46:11,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:46:11,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:46:11,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:46:11,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:46:11,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:46:11,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:46:11,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:46:11,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:46:11,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:46:11,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:46:11,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:46:11,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:46:11,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:46:11,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:46:11,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:46:11,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:46:11,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:46:11,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:46:11,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:46:11,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:46:11,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:46:11,623 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 [2019-10-07 13:46:11,643 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:46:11,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:46:11,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:46:11,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:46:11,647 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:46:11,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:46:11,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:46:11,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:46:11,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:46:11,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:46:11,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:46:11,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:46:11,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:46:11,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:46:11,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:46:11,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:46:11,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:46:11,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:46:11,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:46:11,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:46:11,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:46:11,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:46:11,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:46:11,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:46:11,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:46:11,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:46:11,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:46:11,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:46:11,654 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 [2019-10-07 13:46:11,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:46:11,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:46:11,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:46:11,947 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:46:11,947 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:46:11,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2019-10-07 13:46:12,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f643e521/14b41f541d4441cab0b12407d3c2db22/FLAGd3242c659 [2019-10-07 13:46:12,487 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:46:12,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c [2019-10-07 13:46:12,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f643e521/14b41f541d4441cab0b12407d3c2db22/FLAGd3242c659 [2019-10-07 13:46:12,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f643e521/14b41f541d4441cab0b12407d3c2db22 [2019-10-07 13:46:12,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:46:12,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:46:12,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:12,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:46:12,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:46:12,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:12" (1/1) ... [2019-10-07 13:46:12,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0286db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:12, skipping insertion in model container [2019-10-07 13:46:12,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:12" (1/1) ... [2019-10-07 13:46:12,939 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:46:12,958 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:46:13,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:13,182 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:46:13,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:13,310 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:46:13,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13 WrapperNode [2019-10-07 13:46:13,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:13,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:46:13,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:46:13,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:46:13,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (1/1) ... [2019-10-07 13:46:13,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (1/1) ... [2019-10-07 13:46:13,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (1/1) ... [2019-10-07 13:46:13,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (1/1) ... [2019-10-07 13:46:13,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (1/1) ... [2019-10-07 13:46:13,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (1/1) ... [2019-10-07 13:46:13,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (1/1) ... [2019-10-07 13:46:13,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:46:13,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:46:13,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:46:13,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:46:13,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (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 [2019-10-07 13:46:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:46:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:46:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:46:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:46:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:46:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:46:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:46:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:46:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:46:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:46:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:46:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:46:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:46:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:46:13,684 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:46:13,685 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:46:13,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:13 BoogieIcfgContainer [2019-10-07 13:46:13,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:46:13,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:46:13,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:46:13,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:46:13,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:46:12" (1/3) ... [2019-10-07 13:46:13,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed0d076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:13, skipping insertion in model container [2019-10-07 13:46:13,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:13" (2/3) ... [2019-10-07 13:46:13,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed0d076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:13, skipping insertion in model container [2019-10-07 13:46:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:13" (3/3) ... [2019-10-07 13:46:13,706 INFO L109 eAbstractionObserver]: Analyzing ICFG nec40.c [2019-10-07 13:46:13,727 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:46:13,740 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:46:13,750 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:46:13,773 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:46:13,774 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:46:13,774 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:46:13,774 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:46:13,774 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:46:13,774 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:46:13,775 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:46:13,775 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:46:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-07 13:46:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-07 13:46:13,795 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:13,796 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:13,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:13,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:13,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1352878837, now seen corresponding path program 1 times [2019-10-07 13:46:13,810 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:13,811 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:13,811 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:13,811 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:13,947 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:13,948 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:46:13,948 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:46:13,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:46:13,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:46:13,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:46:13,965 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-07 13:46:13,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:13,984 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-10-07 13:46:13,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:46:13,986 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-07 13:46:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:13,994 INFO L225 Difference]: With dead ends: 35 [2019-10-07 13:46:13,994 INFO L226 Difference]: Without dead ends: 15 [2019-10-07 13:46:13,997 INFO L606 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 [2019-10-07 13:46:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-07 13:46:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-07 13:46:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-07 13:46:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-07 13:46:14,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2019-10-07 13:46:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:14,040 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-07 13:46:14,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:46:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-07 13:46:14,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:46:14,042 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:14,042 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:14,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:14,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:14,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1586152343, now seen corresponding path program 1 times [2019-10-07 13:46:14,043 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:14,044 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:14,044 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:14,044 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:14,151 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:55) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 13:46:14,160 INFO L168 Benchmark]: Toolchain (without parser) took 1235.37 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 141.6 MB in the end (delta: -38.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:14,162 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:46:14,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.87 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.5 MB in the beginning and 182.8 MB in the end (delta: -80.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:14,165 INFO L168 Benchmark]: Boogie Preprocessor took 47.91 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:14,167 INFO L168 Benchmark]: RCFGBuilder took 326.47 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 165.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:14,168 INFO L168 Benchmark]: TraceAbstraction took 467.06 ms. Allocated memory is still 203.4 MB. Free memory was 164.7 MB in the beginning and 141.6 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:14,178 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.87 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.5 MB in the beginning and 182.8 MB in the end (delta: -80.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.91 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 326.47 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 165.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 467.06 ms. Allocated memory is still 203.4 MB. Free memory was 164.7 MB in the beginning and 141.6 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...