/usr/bin/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-fb55353 [2019-11-07 04:03:32,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:03:32,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:03:32,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:03:32,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:03:32,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:03:32,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:03:32,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:03:32,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:03:32,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:03:32,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:03:32,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:03:32,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:03:32,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:03:32,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:03:32,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:03:32,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:03:32,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:03:32,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:03:32,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:03:32,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:03:32,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:03:32,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:03:32,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:03:32,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:03:32,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:03:32,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:03:32,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:03:32,877 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 [2019-11-07 04:03:32,912 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:03:32,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:03:32,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:03:32,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:03:32,917 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:03:32,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:03:32,918 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:03:32,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:03:32,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:03:32,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:03:32,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:03:32,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:03:32,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:03:32,919 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:03:32,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:03:32,919 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:03:32,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:03:32,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:03:32,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:03:32,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:03:32,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:03:32,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:03:32,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:03:32,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:03:32,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:03:32,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:03:32,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:03:32,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:03:32,922 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 [2019-11-07 04:03:33,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:03:33,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:03:33,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:03:33,218 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:03:33,218 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:03:33,219 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2019-11-07 04:03:33,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39471ff6a/dfb05fdd46654a1381989cac1c33d309/FLAG1b722db0b [2019-11-07 04:03:33,763 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:03:33,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c [2019-11-07 04:03:33,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39471ff6a/dfb05fdd46654a1381989cac1c33d309/FLAG1b722db0b [2019-11-07 04:03:34,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39471ff6a/dfb05fdd46654a1381989cac1c33d309 [2019-11-07 04:03:34,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:03:34,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:03:34,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:34,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:03:34,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:03:34,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439ec646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34, skipping insertion in model container [2019-11-07 04:03:34,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,250 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:03:34,299 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:03:34,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:34,577 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:03:34,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:34,620 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:03:34,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34 WrapperNode [2019-11-07 04:03:34,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:34,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:03:34,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:03:34,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:03:34,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (1/1) ... [2019-11-07 04:03:34,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:03:34,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:03:34,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:03:34,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:03:34,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (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 [2019-11-07 04:03:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:03:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:03:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:03:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:03:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:03:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:03:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:03:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:03:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:03:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:03:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:03:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:03:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:03:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:03:35,084 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:03:35,085 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:03:35,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:35 BoogieIcfgContainer [2019-11-07 04:03:35,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:03:35,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:03:35,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:03:35,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:03:35,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:03:34" (1/3) ... [2019-11-07 04:03:35,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606cf516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:35, skipping insertion in model container [2019-11-07 04:03:35,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:34" (2/3) ... [2019-11-07 04:03:35,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606cf516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:35, skipping insertion in model container [2019-11-07 04:03:35,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:35" (3/3) ... [2019-11-07 04:03:35,094 INFO L109 eAbstractionObserver]: Analyzing ICFG nec40.c [2019-11-07 04:03:35,104 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:03:35,112 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:03:35,134 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:03:35,158 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:03:35,159 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:03:35,159 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:03:35,159 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:03:35,159 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:03:35,159 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:03:35,160 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:03:35,160 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:03:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-07 04:03:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 04:03:35,182 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:35,183 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:35,185 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1352878837, now seen corresponding path program 1 times [2019-11-07 04:03:35,198 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:35,198 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847301587] [2019-11-07 04:03:35,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:35,352 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847301587] [2019-11-07 04:03:35,353 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:03:35,353 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:03:35,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705605613] [2019-11-07 04:03:35,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:03:35,359 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:35,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:03:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:03:35,377 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-07 04:03:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:35,401 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-11-07 04:03:35,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:03:35,402 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-07 04:03:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:35,411 INFO L225 Difference]: With dead ends: 35 [2019-11-07 04:03:35,412 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 04:03:35,415 INFO L630 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 [2019-11-07 04:03:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 04:03:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-07 04:03:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 04:03:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-07 04:03:35,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2019-11-07 04:03:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:35,457 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-07 04:03:35,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:03:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-07 04:03:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 04:03:35,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:35,459 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:35,459 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:35,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1586152343, now seen corresponding path program 1 times [2019-11-07 04:03:35,460 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:35,460 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218715002] [2019-11-07 04:03:35,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:35,578 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:274) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:210) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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) [2019-11-07 04:03:35,595 INFO L168 Benchmark]: Toolchain (without parser) took 1386.25 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 141.0 MB in the end (delta: -38.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:35,596 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-07 04:03:35,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.31 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 92.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:35,602 INFO L168 Benchmark]: Boogie Preprocessor took 125.28 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.4 MB in the beginning and 179.7 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:35,605 INFO L168 Benchmark]: RCFGBuilder took 339.56 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 164.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:35,606 INFO L168 Benchmark]: TraceAbstraction took 497.78 ms. Allocated memory is still 202.4 MB. Free memory was 164.2 MB in the beginning and 141.0 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:35,620 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 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 410.31 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 92.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.28 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.4 MB in the beginning and 179.7 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.56 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 164.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 497.78 ms. Allocated memory is still 202.4 MB. Free memory was 164.2 MB in the beginning and 141.0 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 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...