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/Problem03_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:41,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:41,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:41,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:41:41,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:41:41,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:41:41,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:41:41,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:41:41,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:41:41,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:41:41,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:41:41,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:41:41,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:41,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:41,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:41,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:41,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:41,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:41,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:41,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:41,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:41,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:41,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:41,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:41,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:41:41,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:41,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:41,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:41,599 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 [2019-10-13 21:41:41,620 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:41,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:41,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:41,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:41,623 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:41,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:41,623 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:41,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:41,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:41,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:41,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:41,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:41,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:41,626 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:41,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:41,626 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:41,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:41,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:41,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:41,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:41,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:41,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:41,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:41,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:41,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:41,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:41,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:41,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:41,629 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 [2019-10-13 21:41:41,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:41,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:41,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:41,913 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:41,913 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:41,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-13 21:41:41,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e64e6817/0733b28d0bb844d0a60cba9afe8ab460/FLAGdabf2db7c [2019-10-13 21:41:42,555 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:42,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-13 21:41:42,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e64e6817/0733b28d0bb844d0a60cba9afe8ab460/FLAGdabf2db7c [2019-10-13 21:41:42,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e64e6817/0733b28d0bb844d0a60cba9afe8ab460 [2019-10-13 21:41:42,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:41:42,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:41:42,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:42,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:41:42,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:41:42,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:42" (1/1) ... [2019-10-13 21:41:42,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421e582d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:42, skipping insertion in model container [2019-10-13 21:41:42,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:42" (1/1) ... [2019-10-13 21:41:42,750 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:41:42,826 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:41:43,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:43,566 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:41:43,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:43,866 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:41:43,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43 WrapperNode [2019-10-13 21:41:43,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:43,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:41:43,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:41:43,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:41:43,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (1/1) ... [2019-10-13 21:41:43,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (1/1) ... [2019-10-13 21:41:43,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (1/1) ... [2019-10-13 21:41:43,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (1/1) ... [2019-10-13 21:41:43,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (1/1) ... [2019-10-13 21:41:44,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (1/1) ... [2019-10-13 21:41:44,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (1/1) ... [2019-10-13 21:41:44,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:41:44,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:41:44,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:41:44,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:41:44,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (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 [2019-10-13 21:41:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:41:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:41:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:41:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:41:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:41:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:41:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:41:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:41:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:41:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:41:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:41:47,118 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:41:47,118 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:41:47,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:47 BoogieIcfgContainer [2019-10-13 21:41:47,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:41:47,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:41:47,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:41:47,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:41:47,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:41:42" (1/3) ... [2019-10-13 21:41:47,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2eb0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:47, skipping insertion in model container [2019-10-13 21:41:47,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:43" (2/3) ... [2019-10-13 21:41:47,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2eb0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:47, skipping insertion in model container [2019-10-13 21:41:47,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:47" (3/3) ... [2019-10-13 21:41:47,129 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2019-10-13 21:41:47,139 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:41:47,149 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:41:47,160 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:41:47,193 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:41:47,194 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:41:47,194 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:41:47,194 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:41:47,194 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:41:47,194 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:41:47,194 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:41:47,195 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:41:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-13 21:41:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:41:47,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:47,234 INFO L380 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:47,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:47,243 INFO L82 PathProgramCache]: Analyzing trace with hash 136475942, now seen corresponding path program 1 times [2019-10-13 21:41:47,253 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:47,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815954096] [2019-10-13 21:41:47,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:47,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:47,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:48,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815954096] [2019-10-13 21:41:48,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:48,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:48,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112784587] [2019-10-13 21:41:48,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:48,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:48,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:48,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:48,078 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-13 21:41:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:49,147 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-13 21:41:49,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:49,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-13 21:41:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:49,166 INFO L225 Difference]: With dead ends: 462 [2019-10-13 21:41:49,167 INFO L226 Difference]: Without dead ends: 301 [2019-10-13 21:41:49,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-13 21:41:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-13 21:41:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-13 21:41:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 535 transitions. [2019-10-13 21:41:49,241 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 535 transitions. Word has length 149 [2019-10-13 21:41:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:49,243 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 535 transitions. [2019-10-13 21:41:49,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 535 transitions. [2019-10-13 21:41:49,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:41:49,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:49,249 INFO L380 BasicCegarLoop]: trace histogram [2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:49,249 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1532425966, now seen corresponding path program 1 times [2019-10-13 21:41:49,250 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:49,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121427362] [2019-10-13 21:41:49,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:49,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:49,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:49,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121427362] [2019-10-13 21:41:49,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:49,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:49,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003733570] [2019-10-13 21:41:49,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:49,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:49,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:49,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:49,555 INFO L87 Difference]: Start difference. First operand 301 states and 535 transitions. Second operand 3 states. [2019-10-13 21:41:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:50,503 INFO L93 Difference]: Finished difference Result 891 states and 1606 transitions. [2019-10-13 21:41:50,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:50,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:41:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:50,512 INFO L225 Difference]: With dead ends: 891 [2019-10-13 21:41:50,512 INFO L226 Difference]: Without dead ends: 595 [2019-10-13 21:41:50,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-13 21:41:50,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-13 21:41:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-13 21:41:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 970 transitions. [2019-10-13 21:41:50,566 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 970 transitions. Word has length 161 [2019-10-13 21:41:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:50,567 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 970 transitions. [2019-10-13 21:41:50,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 970 transitions. [2019-10-13 21:41:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 21:41:50,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:50,574 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:50,575 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash -478372114, now seen corresponding path program 1 times [2019-10-13 21:41:50,575 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:50,576 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765806073] [2019-10-13 21:41:50,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:50,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:50,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:50,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765806073] [2019-10-13 21:41:50,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:50,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:50,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755253434] [2019-10-13 21:41:50,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:50,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:50,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:50,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:50,948 INFO L87 Difference]: Start difference. First operand 595 states and 970 transitions. Second operand 3 states. [2019-10-13 21:41:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:51,861 INFO L93 Difference]: Finished difference Result 1773 states and 2941 transitions. [2019-10-13 21:41:51,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:51,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-10-13 21:41:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:51,870 INFO L225 Difference]: With dead ends: 1773 [2019-10-13 21:41:51,870 INFO L226 Difference]: Without dead ends: 1183 [2019-10-13 21:41:51,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-10-13 21:41:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-10-13 21:41:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-10-13 21:41:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1913 transitions. [2019-10-13 21:41:51,929 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1913 transitions. Word has length 163 [2019-10-13 21:41:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:51,930 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1913 transitions. [2019-10-13 21:41:51,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1913 transitions. [2019-10-13 21:41:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:41:51,936 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:51,936 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:51,937 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:51,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1566269997, now seen corresponding path program 1 times [2019-10-13 21:41:51,937 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:51,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727302279] [2019-10-13 21:41:51,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:51,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:51,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:52,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727302279] [2019-10-13 21:41:52,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:52,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:52,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328296899] [2019-10-13 21:41:52,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:52,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:52,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:52,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:52,092 INFO L87 Difference]: Start difference. First operand 1183 states and 1913 transitions. Second operand 6 states. [2019-10-13 21:41:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:53,442 INFO L93 Difference]: Finished difference Result 3663 states and 6645 transitions. [2019-10-13 21:41:53,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:41:53,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-10-13 21:41:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:53,475 INFO L225 Difference]: With dead ends: 3663 [2019-10-13 21:41:53,475 INFO L226 Difference]: Without dead ends: 2485 [2019-10-13 21:41:53,480 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2019-10-13 21:41:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2403. [2019-10-13 21:41:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2019-10-13 21:41:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3970 transitions. [2019-10-13 21:41:53,657 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3970 transitions. Word has length 166 [2019-10-13 21:41:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:53,657 INFO L462 AbstractCegarLoop]: Abstraction has 2403 states and 3970 transitions. [2019-10-13 21:41:53,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3970 transitions. [2019-10-13 21:41:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:41:53,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:53,668 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:53,668 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:53,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:53,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1349583205, now seen corresponding path program 1 times [2019-10-13 21:41:53,669 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:53,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702847546] [2019-10-13 21:41:53,670 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:53,670 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:53,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:53,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702847546] [2019-10-13 21:41:53,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657083405] [2019-10-13 21:41:53,795 INFO L94 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 [2019-10-13 21:41:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:54,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:41:54,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:54,121 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:54,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708091305] [2019-10-13 21:41:54,259 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-13 21:41:54,259 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:41:54,267 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:41:54,278 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:41:54,279 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:41:54,535 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-13 21:41:55,249 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-13 21:41:55,442 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-13 21:41:55,548 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-13 21:41:55,850 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-13 21:41:56,105 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 21:41:56,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:56,696 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: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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: ε 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.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:102) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:41:56,702 INFO L168 Benchmark]: Toolchain (without parser) took 13967.24 ms. Allocated memory was 144.7 MB in the beginning and 533.2 MB in the end (delta: 388.5 MB). Free memory was 99.8 MB in the beginning and 316.0 MB in the end (delta: -216.2 MB). Peak memory consumption was 172.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:56,702 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:41:56,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1133.46 ms. Allocated memory was 144.7 MB in the beginning and 209.7 MB in the end (delta: 65.0 MB). Free memory was 99.4 MB in the beginning and 134.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:56,704 INFO L168 Benchmark]: Boogie Preprocessor took 178.29 ms. Allocated memory is still 209.7 MB. Free memory was 134.5 MB in the beginning and 123.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:56,705 INFO L168 Benchmark]: RCFGBuilder took 3072.52 ms. Allocated memory was 209.7 MB in the beginning and 299.4 MB in the end (delta: 89.7 MB). Free memory was 123.2 MB in the beginning and 220.3 MB in the end (delta: -97.1 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:56,706 INFO L168 Benchmark]: TraceAbstraction took 9578.99 ms. Allocated memory was 299.4 MB in the beginning and 533.2 MB in the end (delta: 233.8 MB). Free memory was 220.3 MB in the beginning and 316.0 MB in the end (delta: -95.7 MB). Peak memory consumption was 138.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:56,710 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 144.7 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1133.46 ms. Allocated memory was 144.7 MB in the beginning and 209.7 MB in the end (delta: 65.0 MB). Free memory was 99.4 MB in the beginning and 134.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 178.29 ms. Allocated memory is still 209.7 MB. Free memory was 134.5 MB in the beginning and 123.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3072.52 ms. Allocated memory was 209.7 MB in the beginning and 299.4 MB in the end (delta: 89.7 MB). Free memory was 123.2 MB in the beginning and 220.3 MB in the end (delta: -97.1 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9578.99 ms. Allocated memory was 299.4 MB in the beginning and 533.2 MB in the end (delta: 233.8 MB). Free memory was 220.3 MB in the beginning and 316.0 MB in the end (delta: -95.7 MB). Peak memory consumption was 138.2 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: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...