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/nla-digbench/bresenham.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:47:59,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:47:59,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:47:59,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:47:59,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:47:59,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:47:59,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:47:59,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:47:59,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:47:59,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:47:59,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:47:59,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:47:59,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:47:59,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:47:59,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:47:59,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:47:59,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:47:59,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:47:59,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:47:59,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:47:59,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:47:59,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:47:59,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:47:59,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:47:59,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:47:59,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:47:59,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:47:59,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:47:59,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:47:59,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:47:59,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:47:59,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:47:59,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:47:59,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:47:59,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:47:59,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:47:59,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:47:59,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:47:59,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:47:59,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:47:59,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:47:59,364 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 13:47:59,382 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:47:59,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:47:59,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:47:59,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:47:59,387 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:47:59,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:47:59,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:47:59,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:47:59,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:47:59,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:47:59,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:47:59,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:47:59,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:47:59,391 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:47:59,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:47:59,391 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:47:59,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:47:59,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:47:59,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:47:59,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:47:59,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:47:59,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:47:59,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:47:59,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:47:59,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:47:59,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:47:59,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:47:59,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:47:59,394 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 13:47:59,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:47:59,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:47:59,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:47:59,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:47:59,670 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:47:59,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/bresenham.c [2019-10-07 13:47:59,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55cc9559/27c6a9bf225b4cc5964239f4609d884c/FLAG2d4961088 [2019-10-07 13:48:00,147 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:48:00,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/bresenham.c [2019-10-07 13:48:00,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55cc9559/27c6a9bf225b4cc5964239f4609d884c/FLAG2d4961088 [2019-10-07 13:48:00,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55cc9559/27c6a9bf225b4cc5964239f4609d884c [2019-10-07 13:48:00,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:48:00,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:48:00,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:48:00,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:48:00,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:48:00,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc525ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00, skipping insertion in model container [2019-10-07 13:48:00,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,581 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:48:00,603 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:48:00,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:48:00,824 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:48:00,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:48:00,858 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:48:00,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00 WrapperNode [2019-10-07 13:48:00,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:48:00,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:48:00,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:48:00,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:48:00,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (1/1) ... [2019-10-07 13:48:00,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:48:00,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:48:00,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:48:00,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:48:00,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (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 13:48:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:48:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:48:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:48:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:48:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:48:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:48:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:48:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:48:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:48:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:48:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:48:01,329 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:48:01,329 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:48:01,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:48:01 BoogieIcfgContainer [2019-10-07 13:48:01,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:48:01,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:48:01,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:48:01,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:48:01,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:48:00" (1/3) ... [2019-10-07 13:48:01,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6e18e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:48:01, skipping insertion in model container [2019-10-07 13:48:01,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:00" (2/3) ... [2019-10-07 13:48:01,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6e18e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:48:01, skipping insertion in model container [2019-10-07 13:48:01,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:48:01" (3/3) ... [2019-10-07 13:48:01,339 INFO L109 eAbstractionObserver]: Analyzing ICFG bresenham.c [2019-10-07 13:48:01,348 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:48:01,354 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:48:01,364 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:48:01,385 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:48:01,386 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:48:01,386 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:48:01,386 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:48:01,386 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:48:01,386 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:48:01,387 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:48:01,387 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:48:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-07 13:48:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:48:01,415 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:48:01,416 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:48:01,418 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:48:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:48:01,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1598892056, now seen corresponding path program 1 times [2019-10-07 13:48:01,428 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:48:01,429 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:01,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:01,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:48:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:48:01,565 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 13:48:01,566 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:01,566 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:48:01,567 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:48:01,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:48:01,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:48:01,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:48:01,588 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-07 13:48:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:48:01,616 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-10-07 13:48:01,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:48:01,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-07 13:48:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:48:01,629 INFO L225 Difference]: With dead ends: 33 [2019-10-07 13:48:01,629 INFO L226 Difference]: Without dead ends: 15 [2019-10-07 13:48:01,636 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 13:48:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-07 13:48:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-07 13:48:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-07 13:48:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-07 13:48:01,689 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-07 13:48:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:48:01,690 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-07 13:48:01,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:48:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-07 13:48:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:48:01,692 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:48:01,693 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:48:01,693 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:48:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:48:01,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1561891634, now seen corresponding path program 1 times [2019-10-07 13:48:01,696 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:48:01,696 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:01,697 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:01,697 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:48:01,718 ERROR L261 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-07 13:48:01,719 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Benchmark is only available after the trace check is finished. at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.getStatistics(TraceCheck.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.getStatistics(InterpolatingTraceCheck.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.aggregateStatistics(IpTcStrategyModuleTraceCheck.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 13:48:01,729 INFO L168 Benchmark]: Toolchain (without parser) took 1160.63 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 145.9 MB in the end (delta: -43.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:01,731 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:48:01,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.28 ms. Allocated memory is still 144.7 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:01,736 INFO L168 Benchmark]: Boogie Preprocessor took 110.44 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 180.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:01,737 INFO L168 Benchmark]: RCFGBuilder took 361.30 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 165.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:01,739 INFO L168 Benchmark]: TraceAbstraction took 392.29 ms. Allocated memory is still 201.9 MB. Free memory was 164.7 MB in the beginning and 145.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:01,752 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.28 ms. Allocated memory is still 144.7 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.44 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 180.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.30 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 165.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 392.29 ms. Allocated memory is still 201.9 MB. Free memory was 164.7 MB in the beginning and 145.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Benchmark is only available after the trace check is finished. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Benchmark is only available after the trace check is finished.: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.getStatistics(TraceCheck.java:457) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...