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/cohencu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:48:03,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:48:03,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:48:03,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:48:03,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:48:03,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:48:03,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:48:03,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:48:03,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:48:03,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:48:03,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:48:03,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:48:03,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:48:03,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:48:03,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:48:03,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:48:03,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:48:03,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:48:03,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:48:03,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:48:03,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:48:03,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:48:03,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:48:03,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:48:03,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:48:03,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:48:03,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:48:03,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:48:03,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:48:03,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:48:03,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:48:03,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:48:03,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:48:03,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:48:03,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:48:03,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:48:03,880 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 13:48:03,904 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:48:03,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:48:03,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:48:03,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:48:03,909 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:48:03,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:48:03,910 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:48:03,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:48:03,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:48:03,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:48:03,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:48:03,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:48:03,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:48:03,912 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:48:03,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:48:03,912 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:48:03,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:48:03,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:48:03,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:48:03,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:48:03,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:48:03,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:48:03,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:48:03,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:48:03,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:48:03,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:48:03,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:48:03,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:48:03,915 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 13:48:04,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:48:04,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:48:04,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:48:04,228 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:48:04,228 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:48:04,229 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu.c [2019-10-07 13:48:04,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6853f8761/eedc8f3f66ee40fa97921d0c3e93131b/FLAGd4c38c76e [2019-10-07 13:48:04,728 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:48:04,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu.c [2019-10-07 13:48:04,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6853f8761/eedc8f3f66ee40fa97921d0c3e93131b/FLAGd4c38c76e [2019-10-07 13:48:05,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6853f8761/eedc8f3f66ee40fa97921d0c3e93131b [2019-10-07 13:48:05,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:48:05,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:48:05,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:48:05,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:48:05,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:48:05,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac9320a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05, skipping insertion in model container [2019-10-07 13:48:05,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,175 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:48:05,196 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:48:05,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:48:05,374 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:48:05,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:48:05,409 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:48:05,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05 WrapperNode [2019-10-07 13:48:05,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:48:05,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:48:05,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:48:05,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:48:05,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (1/1) ... [2019-10-07 13:48:05,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:48:05,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:48:05,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:48:05,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:48:05,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (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 13:48:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:48:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:48:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:48:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:48:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:48:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:48:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:48:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:48:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:48:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:48:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:48:05,805 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:48:05,805 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:48:05,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:48:05 BoogieIcfgContainer [2019-10-07 13:48:05,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:48:05,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:48:05,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:48:05,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:48:05,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:48:05" (1/3) ... [2019-10-07 13:48:05,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4912631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:48:05, skipping insertion in model container [2019-10-07 13:48:05,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:05" (2/3) ... [2019-10-07 13:48:05,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4912631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:48:05, skipping insertion in model container [2019-10-07 13:48:05,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:48:05" (3/3) ... [2019-10-07 13:48:05,831 INFO L109 eAbstractionObserver]: Analyzing ICFG cohencu.c [2019-10-07 13:48:05,854 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:48:05,865 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:48:05,881 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:48:05,910 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:48:05,910 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:48:05,911 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:48:05,911 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:48:05,911 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:48:05,911 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:48:05,911 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:48:05,911 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:48:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-07 13:48:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:48:05,933 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:48:05,934 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:48:05,935 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:48:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:48:05,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2104671198, now seen corresponding path program 1 times [2019-10-07 13:48:05,950 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:48:05,950 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:05,950 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:05,950 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:48:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:48:06,038 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 13:48:06,038 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:06,039 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:48:06,039 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:48:06,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:48:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:48:06,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:48:06,054 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-07 13:48:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:48:06,083 INFO L93 Difference]: Finished difference Result 51 states and 86 transitions. [2019-10-07 13:48:06,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:48:06,085 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-07 13:48:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:48:06,094 INFO L225 Difference]: With dead ends: 51 [2019-10-07 13:48:06,094 INFO L226 Difference]: Without dead ends: 24 [2019-10-07 13:48:06,098 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 13:48:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-07 13:48:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-07 13:48:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-07 13:48:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2019-10-07 13:48:06,144 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2019-10-07 13:48:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:48:06,144 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-10-07 13:48:06,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:48:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2019-10-07 13:48:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:48:06,145 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:48:06,146 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:48:06,146 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:48:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:48:06,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2134586928, now seen corresponding path program 1 times [2019-10-07 13:48:06,147 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:48:06,147 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:06,147 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:06,147 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:48:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:48:06,347 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 13:48:06,350 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:06,350 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:48:06,350 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:48:06,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:48:06,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:48:06,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:48:06,353 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 5 states. [2019-10-07 13:48:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:48:06,460 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2019-10-07 13:48:06,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:48:06,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-07 13:48:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:48:06,463 INFO L225 Difference]: With dead ends: 30 [2019-10-07 13:48:06,463 INFO L226 Difference]: Without dead ends: 28 [2019-10-07 13:48:06,465 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:48:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-07 13:48:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-07 13:48:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-07 13:48:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2019-10-07 13:48:06,494 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2019-10-07 13:48:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:48:06,494 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2019-10-07 13:48:06,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:48:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2019-10-07 13:48:06,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 13:48:06,496 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:48:06,496 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:48:06,496 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:48:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:48:06,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1496147284, now seen corresponding path program 1 times [2019-10-07 13:48:06,497 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:48:06,497 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:06,498 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:06,499 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:48:06,510 ERROR L261 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-07 13:48:06,510 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 13:48:06,516 INFO L168 Benchmark]: Toolchain (without parser) took 1355.49 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 104.3 MB in the beginning and 130.4 MB in the end (delta: -26.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:06,517 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:48:06,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.74 ms. Allocated memory is still 146.3 MB. Free memory was 104.0 MB in the beginning and 94.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:06,520 INFO L168 Benchmark]: Boogie Preprocessor took 130.21 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 94.0 MB in the beginning and 180.2 MB in the end (delta: -86.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:06,522 INFO L168 Benchmark]: RCFGBuilder took 266.34 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 166.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:06,523 INFO L168 Benchmark]: TraceAbstraction took 699.24 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 130.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:06,530 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.74 ms. Allocated memory is still 146.3 MB. Free memory was 104.0 MB in the beginning and 94.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.21 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 94.0 MB in the beginning and 180.2 MB in the end (delta: -86.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.34 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 166.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 699.24 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 130.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 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...