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/Problem18_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:40:53,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:40:53,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:40:53,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:40:53,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:40:53,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:40:53,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:40:53,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:40:53,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:40:53,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:40:53,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:40:53,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:40:53,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:40:53,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:40:53,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:40:53,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:40:53,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:40:53,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:40:53,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:40:53,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:40:53,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:40:53,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:40:53,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:40:53,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:40:53,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 03:40:53,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 03:40:53,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 03:40:53,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 03:40:53,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 03:40:53,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 03:40:53,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 03:40:53,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 03:40:53,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 03:40:53,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 03:40:53,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 03:40:53,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 03:40:53,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 03:40:53,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 03:40:53,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:40:53,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:40:53,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:40:53,830 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 03:40:53,866 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:40:53,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:40:53,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:40:53,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:40:53,867 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:40:53,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:40:53,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:40:53,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:40:53,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:40:53,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:40:53,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:40:53,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:40:53,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:40:53,869 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:40:53,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:40:53,870 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:40:53,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:40:53,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:40:53,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:40:53,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:40:53,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:40:53,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:40:53,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:40:53,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:40:53,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:40:53,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:40:53,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:40:53,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:40:53,873 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 03:40:54,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:40:54,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:40:54,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:40:54,217 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:40:54,217 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:40:54,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2019-10-07 03:40:54,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf28f2b6/741351cbae664588ad568af911b06485/FLAG1b6d0633f [2019-10-07 03:40:55,045 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:40:55,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2019-10-07 03:40:55,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf28f2b6/741351cbae664588ad568af911b06485/FLAG1b6d0633f [2019-10-07 03:40:55,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf28f2b6/741351cbae664588ad568af911b06485 [2019-10-07 03:40:55,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:40:55,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:40:55,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:40:55,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:40:55,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:40:55,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:40:55" (1/1) ... [2019-10-07 03:40:55,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a76cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:55, skipping insertion in model container [2019-10-07 03:40:55,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:40:55" (1/1) ... [2019-10-07 03:40:55,171 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:40:55,305 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:40:56,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:40:56,836 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:40:57,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:40:57,360 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:40:57,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57 WrapperNode [2019-10-07 03:40:57,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:40:57,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:40:57,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:40:57,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:40:57,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (1/1) ... [2019-10-07 03:40:57,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (1/1) ... [2019-10-07 03:40:57,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (1/1) ... [2019-10-07 03:40:57,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (1/1) ... [2019-10-07 03:40:57,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (1/1) ... [2019-10-07 03:40:57,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (1/1) ... [2019-10-07 03:40:57,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (1/1) ... [2019-10-07 03:40:57,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:40:57,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:40:57,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:40:57,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:40:57,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (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 03:40:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:40:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:40:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:40:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:40:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:40:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:40:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:40:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:40:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:40:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:40:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:40:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:40:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:40:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:40:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:42:29,775 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:42:29,776 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:42:29,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:42:29 BoogieIcfgContainer [2019-10-07 03:42:29,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:42:29,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:42:29,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:42:29,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:42:29,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:40:55" (1/3) ... [2019-10-07 03:42:29,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116d3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:42:29, skipping insertion in model container [2019-10-07 03:42:29,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:57" (2/3) ... [2019-10-07 03:42:29,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116d3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:42:29, skipping insertion in model container [2019-10-07 03:42:29,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:42:29" (3/3) ... [2019-10-07 03:42:29,794 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label21.c [2019-10-07 03:42:29,804 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:42:29,811 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:42:29,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:42:29,858 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:42:29,859 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:42:29,859 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:42:29,859 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:42:29,859 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:42:29,860 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:42:29,860 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:42:29,860 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:42:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:42:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:42:29,896 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:29,897 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:42:29,899 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:29,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1816950182, now seen corresponding path program 1 times [2019-10-07 03:42:29,914 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:29,914 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:29,915 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:29,915 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:30,146 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 03:42:30,147 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:30,147 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:42:30,148 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:42:30,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:42:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:42:30,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:42:30,169 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 3 states. [2019-10-07 03:42:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:42:33,560 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2019-10-07 03:42:33,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:42:33,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:42:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:42:33,588 INFO L225 Difference]: With dead ends: 1393 [2019-10-07 03:42:33,588 INFO L226 Difference]: Without dead ends: 921 [2019-10-07 03:42:33,596 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:42:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-07 03:42:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 899. [2019-10-07 03:42:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-07 03:42:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1739 transitions. [2019-10-07 03:42:33,705 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1739 transitions. Word has length 11 [2019-10-07 03:42:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:42:33,706 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1739 transitions. [2019-10-07 03:42:33,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:42:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1739 transitions. [2019-10-07 03:42:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 03:42:33,708 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:33,708 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] [2019-10-07 03:42:33,709 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:33,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2101314135, now seen corresponding path program 1 times [2019-10-07 03:42:33,710 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:33,710 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:33,710 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:33,710 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:33,845 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 03:42:33,845 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:33,846 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:42:33,846 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:42:33,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:42:33,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:42:33,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:42:33,854 INFO L87 Difference]: Start difference. First operand 899 states and 1739 transitions. Second operand 6 states. [2019-10-07 03:42:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:42:38,022 INFO L93 Difference]: Finished difference Result 2721 states and 5303 transitions. [2019-10-07 03:42:38,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:42:38,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-07 03:42:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:42:38,036 INFO L225 Difference]: With dead ends: 2721 [2019-10-07 03:42:38,037 INFO L226 Difference]: Without dead ends: 1827 [2019-10-07 03:42:38,043 INFO L606 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 [2019-10-07 03:42:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2019-10-07 03:42:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1804. [2019-10-07 03:42:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1804 states. [2019-10-07 03:42:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 3372 transitions. [2019-10-07 03:42:38,137 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 3372 transitions. Word has length 25 [2019-10-07 03:42:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:42:38,138 INFO L462 AbstractCegarLoop]: Abstraction has 1804 states and 3372 transitions. [2019-10-07 03:42:38,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:42:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 3372 transitions. [2019-10-07 03:42:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-07 03:42:38,142 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:38,142 INFO L385 BasicCegarLoop]: trace histogram [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, 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 03:42:38,142 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:38,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1756387729, now seen corresponding path program 1 times [2019-10-07 03:42:38,143 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:38,143 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:38,143 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:38,144 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:42:38,308 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:38,308 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:42:38,309 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 03:42:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:38,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:42:38,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:42:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:42:38,531 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:42:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:42:38,617 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:42:38,618 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-10-07 03:42:38,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:42:38,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:42:38,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:42:38,619 INFO L87 Difference]: Start difference. First operand 1804 states and 3372 transitions. Second operand 5 states. [2019-10-07 03:42:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:42:43,024 INFO L93 Difference]: Finished difference Result 5019 states and 9546 transitions. [2019-10-07 03:42:43,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:42:43,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2019-10-07 03:42:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:42:43,052 INFO L225 Difference]: With dead ends: 5019 [2019-10-07 03:42:43,052 INFO L226 Difference]: Without dead ends: 3220 [2019-10-07 03:42:43,058 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-10-07 03:42:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2019-10-07 03:42:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2992. [2019-10-07 03:42:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2019-10-07 03:42:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 5415 transitions. [2019-10-07 03:42:43,180 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 5415 transitions. Word has length 74 [2019-10-07 03:42:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:42:43,180 INFO L462 AbstractCegarLoop]: Abstraction has 2992 states and 5415 transitions. [2019-10-07 03:42:43,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:42:43,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 5415 transitions. [2019-10-07 03:42:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-07 03:42:43,194 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:43,195 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 03:42:43,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:43,400 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:43,401 INFO L82 PathProgramCache]: Analyzing trace with hash -205416070, now seen corresponding path program 1 times [2019-10-07 03:42:43,403 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:43,403 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:43,403 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:43,404 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:42:43,693 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:43,693 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:42:43,693 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 03:42:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:43,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:42:43,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:42:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:42:43,852 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:42:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:42:43,929 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:42:43,929 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-07 03:42:43,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:42:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:42:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 03:42:43,931 INFO L87 Difference]: Start difference. First operand 2992 states and 5415 transitions. Second operand 5 states. [2019-10-07 03:42:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:42:49,937 INFO L93 Difference]: Finished difference Result 7458 states and 13730 transitions. [2019-10-07 03:42:49,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:42:49,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-07 03:42:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:42:49,962 INFO L225 Difference]: With dead ends: 7458 [2019-10-07 03:42:49,962 INFO L226 Difference]: Without dead ends: 4471 [2019-10-07 03:42:49,972 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-07 03:42:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2019-10-07 03:42:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4400. [2019-10-07 03:42:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2019-10-07 03:42:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 7682 transitions. [2019-10-07 03:42:50,108 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 7682 transitions. Word has length 97 [2019-10-07 03:42:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:42:50,109 INFO L462 AbstractCegarLoop]: Abstraction has 4400 states and 7682 transitions. [2019-10-07 03:42:50,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:42:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 7682 transitions. [2019-10-07 03:42:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-07 03:42:50,111 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:50,112 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 03:42:50,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:50,324 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:50,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1103607759, now seen corresponding path program 1 times [2019-10-07 03:42:50,324 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:50,325 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:50,325 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:50,325 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 03:42:50,499 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:50,499 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:42:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:50,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:42:50,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:42:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 03:42:50,807 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:42:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 03:42:50,868 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:42:50,868 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2019-10-07 03:42:50,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:42:50,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:42:50,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:42:50,870 INFO L87 Difference]: Start difference. First operand 4400 states and 7682 transitions. Second operand 5 states. [2019-10-07 03:42:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:42:55,136 INFO L93 Difference]: Finished difference Result 12480 states and 22575 transitions. [2019-10-07 03:42:55,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:42:55,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2019-10-07 03:42:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:42:55,186 INFO L225 Difference]: With dead ends: 12480 [2019-10-07 03:42:55,186 INFO L226 Difference]: Without dead ends: 8085 [2019-10-07 03:42:55,202 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-10-07 03:42:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2019-10-07 03:42:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 7546. [2019-10-07 03:42:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7546 states. [2019-10-07 03:42:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 12051 transitions. [2019-10-07 03:42:55,446 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 12051 transitions. Word has length 105 [2019-10-07 03:42:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:42:55,446 INFO L462 AbstractCegarLoop]: Abstraction has 7546 states and 12051 transitions. [2019-10-07 03:42:55,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:42:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 12051 transitions. [2019-10-07 03:42:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-07 03:42:55,458 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:55,461 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 03:42:55,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:55,663 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:55,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2088992916, now seen corresponding path program 1 times [2019-10-07 03:42:55,663 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:55,663 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:55,664 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:55,664 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-10-07 03:42:55,786 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:55,787 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:42:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:55,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:42:55,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:42:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-07 03:42:56,231 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:42:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-10-07 03:42:56,321 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:42:56,321 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 03:42:56,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:42:56,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:42:56,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:42:56,324 INFO L87 Difference]: Start difference. First operand 7546 states and 12051 transitions. Second operand 5 states. [2019-10-07 03:43:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:43:02,445 INFO L93 Difference]: Finished difference Result 20839 states and 34621 transitions. [2019-10-07 03:43:02,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:43:02,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2019-10-07 03:43:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:43:02,500 INFO L225 Difference]: With dead ends: 20839 [2019-10-07 03:43:02,500 INFO L226 Difference]: Without dead ends: 13298 [2019-10-07 03:43:02,526 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-07 03:43:02,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13298 states. [2019-10-07 03:43:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13298 to 10963. [2019-10-07 03:43:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10963 states. [2019-10-07 03:43:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10963 states to 10963 states and 16475 transitions. [2019-10-07 03:43:02,860 INFO L78 Accepts]: Start accepts. Automaton has 10963 states and 16475 transitions. Word has length 129 [2019-10-07 03:43:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:43:02,860 INFO L462 AbstractCegarLoop]: Abstraction has 10963 states and 16475 transitions. [2019-10-07 03:43:02,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:43:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 10963 states and 16475 transitions. [2019-10-07 03:43:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-07 03:43:02,870 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:43:02,871 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 03:43:03,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:43:03,075 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:43:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:43:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash 991727672, now seen corresponding path program 1 times [2019-10-07 03:43:03,077 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:43:03,077 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:43:03,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:43:03,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:43:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:43:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:43:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 45 proven. 26 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2019-10-07 03:43:03,232 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:43:03,232 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:43:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:43:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:43:03,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:43:03,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:43:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2019-10-07 03:43:03,639 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:43:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 45 proven. 26 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2019-10-07 03:43:03,754 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:43:03,789 INFO L162 IcfgInterpreter]: Started Sifa with 70 locations of interest [2019-10-07 03:43:03,790 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:43:03,799 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:43:03,812 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:43:03,813 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:43:04,017 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 51 for LOIs [2019-10-07 03:43:04,254 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 52 [2019-10-07 03:43:04,859 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 52 [2019-10-07 03:43:05,213 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-07 03:43:05,219 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-07 03:43:05,550 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:43:05,550 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 03:43:05,556 INFO L168 Benchmark]: Toolchain (without parser) took 130407.93 ms. Allocated memory was 143.7 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 93.8 MB in the beginning and 665.9 MB in the end (delta: -572.1 MB). Peak memory consumption was 572.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:43:05,557 INFO L168 Benchmark]: CDTParser took 1.44 ms. Allocated memory is still 143.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:43:05,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2207.87 ms. Allocated memory was 143.7 MB in the beginning and 236.5 MB in the end (delta: 92.8 MB). Free memory was 93.6 MB in the beginning and 122.5 MB in the end (delta: -28.9 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:43:05,562 INFO L168 Benchmark]: Boogie Preprocessor took 259.56 ms. Allocated memory is still 236.5 MB. Free memory was 122.5 MB in the beginning and 102.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:43:05,563 INFO L168 Benchmark]: RCFGBuilder took 92156.71 ms. Allocated memory was 236.5 MB in the beginning and 942.1 MB in the end (delta: 705.7 MB). Free memory was 102.1 MB in the beginning and 420.8 MB in the end (delta: -318.7 MB). Peak memory consumption was 661.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:43:05,564 INFO L168 Benchmark]: TraceAbstraction took 35769.54 ms. Allocated memory was 942.1 MB in the beginning and 1.3 GB in the end (delta: 346.0 MB). Free memory was 409.2 MB in the beginning and 665.9 MB in the end (delta: -256.7 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2019-10-07 03:43:05,568 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.44 ms. Allocated memory is still 143.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2207.87 ms. Allocated memory was 143.7 MB in the beginning and 236.5 MB in the end (delta: 92.8 MB). Free memory was 93.6 MB in the beginning and 122.5 MB in the end (delta: -28.9 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 259.56 ms. Allocated memory is still 236.5 MB. Free memory was 122.5 MB in the beginning and 102.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 92156.71 ms. Allocated memory was 236.5 MB in the beginning and 942.1 MB in the end (delta: 705.7 MB). Free memory was 102.1 MB in the beginning and 420.8 MB in the end (delta: -318.7 MB). Peak memory consumption was 661.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35769.54 ms. Allocated memory was 942.1 MB in the beginning and 1.3 GB in the end (delta: 346.0 MB). Free memory was 409.2 MB in the beginning and 665.9 MB in the end (delta: -256.7 MB). Peak memory consumption was 89.3 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...