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/eca-rers2012/Problem15_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:30:25,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:25,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:25,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:30:25,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:30:25,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:30:25,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:30:25,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:30:25,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:30:25,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:30:25,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:30:25,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:30:25,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:30:25,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:30:25,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:30:25,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:30:25,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:30:25,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:25,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:25,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:25,855 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 03:30:25,872 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:25,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:25,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:25,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:25,876 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:25,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:25,876 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:25,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:25,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:25,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:25,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:25,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:25,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:25,878 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:25,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:25,879 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:25,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:25,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:25,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:25,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:25,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:25,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:25,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:25,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:25,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:25,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:25,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:25,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:25,883 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 03:30:26,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:26,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:26,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:26,204 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:26,205 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:26,205 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2019-10-07 03:30:26,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e2b2ef3/e74c36106b564153b55a7a549e1406c4/FLAGab3e6c2a5 [2019-10-07 03:30:27,007 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:27,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2019-10-07 03:30:27,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e2b2ef3/e74c36106b564153b55a7a549e1406c4/FLAGab3e6c2a5 [2019-10-07 03:30:27,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e2b2ef3/e74c36106b564153b55a7a549e1406c4 [2019-10-07 03:30:27,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:27,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:27,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:27,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:27,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:27,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:27" (1/1) ... [2019-10-07 03:30:27,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:27, skipping insertion in model container [2019-10-07 03:30:27,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:27" (1/1) ... [2019-10-07 03:30:27,179 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:27,267 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:28,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:28,180 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:28,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:28,616 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:28,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28 WrapperNode [2019-10-07 03:30:28,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:28,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:28,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:28,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:28,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (1/1) ... [2019-10-07 03:30:28,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:28,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:28,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:28,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:28,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (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 03:30:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:30:35,270 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:30:35,270 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:30:35,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:35 BoogieIcfgContainer [2019-10-07 03:30:35,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:30:35,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:30:35,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:30:35,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:30:35,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:27" (1/3) ... [2019-10-07 03:30:35,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a411f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:35, skipping insertion in model container [2019-10-07 03:30:35,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:28" (2/3) ... [2019-10-07 03:30:35,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a411f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:35, skipping insertion in model container [2019-10-07 03:30:35,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:35" (3/3) ... [2019-10-07 03:30:35,280 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label42.c [2019-10-07 03:30:35,288 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:30:35,295 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:30:35,307 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:30:35,388 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:30:35,388 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:30:35,389 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:30:35,389 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:30:35,389 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:30:35,389 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:30:35,389 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:30:35,389 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:30:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:30:35,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:30:35,420 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:35,421 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:35,423 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:35,428 INFO L82 PathProgramCache]: Analyzing trace with hash 648051053, now seen corresponding path program 1 times [2019-10-07 03:30:35,435 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:35,435 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:35,435 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:35,435 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:35,663 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 03:30:35,664 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:35,665 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:35,665 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:35,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:35,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:35,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:35,687 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:30:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:41,134 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-07 03:30:41,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:41,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:30:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:41,160 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:30:41,160 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:30:41,170 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:30:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 679. [2019-10-07 03:30:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-07 03:30:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1210 transitions. [2019-10-07 03:30:41,273 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1210 transitions. Word has length 11 [2019-10-07 03:30:41,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:41,273 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1210 transitions. [2019-10-07 03:30:41,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1210 transitions. [2019-10-07 03:30:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-07 03:30:41,276 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:41,276 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:41,277 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:41,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1542711732, now seen corresponding path program 1 times [2019-10-07 03:30:41,277 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:41,277 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:41,278 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:41,278 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:41,427 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:41,427 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:41,428 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:30:41,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:30:41,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:30:41,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:30:41,430 INFO L87 Difference]: Start difference. First operand 679 states and 1210 transitions. Second operand 5 states. [2019-10-07 03:30:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:45,884 INFO L93 Difference]: Finished difference Result 2059 states and 3710 transitions. [2019-10-07 03:30:45,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:30:45,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-07 03:30:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:45,900 INFO L225 Difference]: With dead ends: 2059 [2019-10-07 03:30:45,900 INFO L226 Difference]: Without dead ends: 1385 [2019-10-07 03:30:45,903 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 03:30:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-10-07 03:30:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1340. [2019-10-07 03:30:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-07 03:30:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2018 transitions. [2019-10-07 03:30:45,982 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2018 transitions. Word has length 24 [2019-10-07 03:30:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:45,982 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 2018 transitions. [2019-10-07 03:30:45,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:30:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2018 transitions. [2019-10-07 03:30:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 03:30:45,985 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:45,986 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:45,986 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1104058204, now seen corresponding path program 1 times [2019-10-07 03:30:45,987 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:45,987 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:45,988 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:45,988 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:46,082 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:46,083 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:46,083 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:46,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:46,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:46,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:46,084 INFO L87 Difference]: Start difference. First operand 1340 states and 2018 transitions. Second operand 4 states. [2019-10-07 03:30:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:49,955 INFO L93 Difference]: Finished difference Result 5323 states and 8248 transitions. [2019-10-07 03:30:49,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:49,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-07 03:30:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:49,980 INFO L225 Difference]: With dead ends: 5323 [2019-10-07 03:30:49,982 INFO L226 Difference]: Without dead ends: 3988 [2019-10-07 03:30:49,986 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2019-10-07 03:30:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3416. [2019-10-07 03:30:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3416 states. [2019-10-07 03:30:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 4929 transitions. [2019-10-07 03:30:50,128 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 4929 transitions. Word has length 32 [2019-10-07 03:30:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:50,129 INFO L462 AbstractCegarLoop]: Abstraction has 3416 states and 4929 transitions. [2019-10-07 03:30:50,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 4929 transitions. [2019-10-07 03:30:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-07 03:30:50,138 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:50,140 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:50,140 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:50,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:50,140 INFO L82 PathProgramCache]: Analyzing trace with hash 464928053, now seen corresponding path program 1 times [2019-10-07 03:30:50,141 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:50,141 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:50,141 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:50,141 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:50,447 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:50,447 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:50,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 03:30:50,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:50,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 03:30:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 03:30:50,745 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:50,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:50,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:51,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:51,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:51,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:51,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 03:30:51,196 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:30:51,196 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2019-10-07 03:30:51,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:30:51,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:30:51,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-07 03:30:51,198 INFO L87 Difference]: Start difference. First operand 3416 states and 4929 transitions. Second operand 5 states. [2019-10-07 03:30:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:56,214 INFO L93 Difference]: Finished difference Result 7337 states and 10566 transitions. [2019-10-07 03:30:56,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:30:56,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2019-10-07 03:30:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:56,236 INFO L225 Difference]: With dead ends: 7337 [2019-10-07 03:30:56,236 INFO L226 Difference]: Without dead ends: 3926 [2019-10-07 03:30:56,244 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2019-10-07 03:30:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2019-10-07 03:30:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3691. [2019-10-07 03:30:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3691 states. [2019-10-07 03:30:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 5268 transitions. [2019-10-07 03:30:56,353 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 5268 transitions. Word has length 56 [2019-10-07 03:30:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:56,354 INFO L462 AbstractCegarLoop]: Abstraction has 3691 states and 5268 transitions. [2019-10-07 03:30:56,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:30:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 5268 transitions. [2019-10-07 03:30:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-07 03:30:56,360 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:56,361 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:56,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:56,568 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:56,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1113665287, now seen corresponding path program 1 times [2019-10-07 03:30:56,569 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:56,570 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:56,570 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:56,570 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 03:30:57,120 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:57,121 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:57,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-07 03:30:57,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:57,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-07 03:30:57,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-07 03:30:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 63 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 03:30:57,437 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:57,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:57,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-07 03:30:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 03:30:57,716 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:30:57,748 INFO L162 IcfgInterpreter]: Started Sifa with 43 locations of interest [2019-10-07 03:30:57,748 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:30:57,754 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:30:57,766 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:30:57,767 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:30:57,906 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-07 03:30:58,021 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2019-10-07 03:30:58,842 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7985 conjuctions. This might take some time... [2019-10-07 03:30:59,130 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2019-10-07 03:30:59,395 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7985 conjuctions. This might take some time... [2019-10-07 03:30:59,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2019-10-07 03:30:59,756 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2019-10-07 03:31:00,486 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:00,488 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) 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) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:31:00,495 INFO L168 Benchmark]: Toolchain (without parser) took 33331.38 ms. Allocated memory was 144.7 MB in the beginning and 508.6 MB in the end (delta: 363.9 MB). Free memory was 97.9 MB in the beginning and 116.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 345.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:00,496 INFO L168 Benchmark]: CDTParser took 0.22 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 03:31:00,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1455.06 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 97.7 MB in the beginning and 108.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:00,498 INFO L168 Benchmark]: Boogie Preprocessor took 231.20 ms. Allocated memory is still 205.0 MB. Free memory was 108.8 MB in the beginning and 96.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:00,502 INFO L168 Benchmark]: RCFGBuilder took 6422.20 ms. Allocated memory was 205.0 MB in the beginning and 312.0 MB in the end (delta: 107.0 MB). Free memory was 96.3 MB in the beginning and 78.7 MB in the end (delta: 17.5 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:00,506 INFO L168 Benchmark]: TraceAbstraction took 25218.42 ms. Allocated memory was 312.0 MB in the beginning and 508.6 MB in the end (delta: 196.6 MB). Free memory was 78.7 MB in the beginning and 116.2 MB in the end (delta: -37.5 MB). Peak memory consumption was 159.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:00,512 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1455.06 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 97.7 MB in the beginning and 108.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.20 ms. Allocated memory is still 205.0 MB. Free memory was 108.8 MB in the beginning and 96.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6422.20 ms. Allocated memory was 205.0 MB in the beginning and 312.0 MB in the end (delta: 107.0 MB). Free memory was 96.3 MB in the beginning and 78.7 MB in the end (delta: 17.5 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25218.42 ms. Allocated memory was 312.0 MB in the beginning and 508.6 MB in the end (delta: 196.6 MB). Free memory was 78.7 MB in the beginning and 116.2 MB in the end (delta: -37.5 MB). Peak memory consumption was 159.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...