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/Problem17_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:34:41,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:34:41,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:34:41,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:34:41,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:34:41,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:34:41,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:34:41,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:34:41,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:34:41,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:34:41,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:34:41,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:34:41,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:34:41,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:34:41,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:34:41,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:34:41,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:34:42,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:34:42,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:34:42,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:34:42,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:34:42,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:34:42,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:34:42,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:34:42,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 03:34:42,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 03:34:42,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 03:34:42,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 03:34:42,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 03:34:42,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 03:34:42,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 03:34:42,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 03:34:42,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 03:34:42,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 03:34:42,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 03:34:42,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 03:34:42,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 03:34:42,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 03:34:42,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:34:42,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:34:42,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:34:42,035 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 03:34:42,072 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:34:42,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:34:42,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:34:42,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:34:42,077 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:34:42,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:34:42,081 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:34:42,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:34:42,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:34:42,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:34:42,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:34:42,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:34:42,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:34:42,082 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:34:42,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:34:42,082 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:34:42,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:34:42,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:34:42,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:34:42,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:34:42,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:34:42,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:34:42,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:34:42,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:34:42,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:34:42,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:34:42,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:34:42,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:34:42,086 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 03:34:42,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:34:42,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:34:42,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:34:42,381 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:34:42,381 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:34:42,382 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2019-10-07 03:34:42,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8146e1acd/701465a3d1ba41c29366a863dbb38190/FLAGb87cdb828 [2019-10-07 03:34:43,255 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:34:43,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2019-10-07 03:34:43,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8146e1acd/701465a3d1ba41c29366a863dbb38190/FLAGb87cdb828 [2019-10-07 03:34:43,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8146e1acd/701465a3d1ba41c29366a863dbb38190 [2019-10-07 03:34:43,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:34:43,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:34:43,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:34:43,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:34:43,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:34:43,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:34:43" (1/1) ... [2019-10-07 03:34:43,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27396f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:43, skipping insertion in model container [2019-10-07 03:34:43,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:34:43" (1/1) ... [2019-10-07 03:34:43,355 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:34:43,467 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:34:44,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:34:44,612 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:34:45,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:34:45,065 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:34:45,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45 WrapperNode [2019-10-07 03:34:45,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:34:45,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:34:45,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:34:45,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:34:45,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (1/1) ... [2019-10-07 03:34:45,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (1/1) ... [2019-10-07 03:34:45,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (1/1) ... [2019-10-07 03:34:45,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (1/1) ... [2019-10-07 03:34:45,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (1/1) ... [2019-10-07 03:34:45,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (1/1) ... [2019-10-07 03:34:45,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (1/1) ... [2019-10-07 03:34:45,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:34:45,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:34:45,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:34:45,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:34:45,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (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 03:34:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:34:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:34:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:34:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:34:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:34:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:34:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:34:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:34:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:34:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:34:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:34:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:34:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:38:34,787 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:38:34,788 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:38:34,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:38:34 BoogieIcfgContainer [2019-10-07 03:38:34,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:38:34,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:38:34,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:38:34,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:38:34,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:34:43" (1/3) ... [2019-10-07 03:38:34,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26faf2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:38:34, skipping insertion in model container [2019-10-07 03:38:34,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:45" (2/3) ... [2019-10-07 03:38:34,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26faf2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:38:34, skipping insertion in model container [2019-10-07 03:38:34,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:38:34" (3/3) ... [2019-10-07 03:38:34,798 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label04.c [2019-10-07 03:38:34,808 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:38:34,817 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:38:34,829 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:38:34,860 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:38:34,860 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:38:34,861 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:38:34,861 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:38:34,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:38:34,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:38:34,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:38:34,862 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:38:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:38:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:38:34,895 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:38:34,897 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:38:34,899 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:38:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:38:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash 72878079, now seen corresponding path program 1 times [2019-10-07 03:38:34,914 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:38:34,915 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:38:34,915 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:38:34,915 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:38:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:38:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:38:35,198 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 03:38:35,198 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:38:35,199 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:38:35,199 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:38:35,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:38:35,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:38:35,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:38:35,221 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:38:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:38:40,325 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-07 03:38:40,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:38:40,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:38:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:38:40,351 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:38:40,352 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:38:40,361 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:38:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:38:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 694. [2019-10-07 03:38:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-07 03:38:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1098 transitions. [2019-10-07 03:38:40,462 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1098 transitions. Word has length 11 [2019-10-07 03:38:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:38:40,462 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 1098 transitions. [2019-10-07 03:38:40,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:38:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1098 transitions. [2019-10-07 03:38:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-07 03:38:40,465 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:38:40,465 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:38:40,465 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:38:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:38:40,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1160847208, now seen corresponding path program 1 times [2019-10-07 03:38:40,466 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:38:40,466 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:38:40,466 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:38:40,467 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:38:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:38:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:38:40,968 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 03:38:40,968 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:38:40,968 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:38:40,969 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:38:40,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:38:40,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:38:40,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:38:40,971 INFO L87 Difference]: Start difference. First operand 694 states and 1098 transitions. Second operand 5 states. [2019-10-07 03:38:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:38:47,809 INFO L93 Difference]: Finished difference Result 2100 states and 3400 transitions. [2019-10-07 03:38:47,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:38:47,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-10-07 03:38:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:38:47,824 INFO L225 Difference]: With dead ends: 2100 [2019-10-07 03:38:47,824 INFO L226 Difference]: Without dead ends: 1411 [2019-10-07 03:38:47,828 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 03:38:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2019-10-07 03:38:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1368. [2019-10-07 03:38:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-07 03:38:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1993 transitions. [2019-10-07 03:38:47,902 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1993 transitions. Word has length 23 [2019-10-07 03:38:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:38:47,902 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 1993 transitions. [2019-10-07 03:38:47,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:38:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1993 transitions. [2019-10-07 03:38:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-07 03:38:47,904 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:38:47,904 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:38:47,904 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:38:47,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:38:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash 649204842, now seen corresponding path program 1 times [2019-10-07 03:38:47,905 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:38:47,905 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:38:47,905 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:38:47,905 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:38:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:38:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:38:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:38:48,100 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:38:48,100 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:38:48,101 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 03:38:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:38:48,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 03:38:48,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:38:48,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:38:48,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:38:48,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:38:48,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:38:48,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:38:48,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:38:48,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:38:48,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:14,837 WARN L191 SmtUtils]: Spent 24.40 s on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-10-07 03:39:16,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-07 03:39:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:39:19,160 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:39:19,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:19,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:25,425 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 86 DAG size of output: 16 [2019-10-07 03:39:25,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:25,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:25,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:39:25,482 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2019-10-07 03:39:27,933 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2019-10-07 03:39:27,990 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 03:39:27,991 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:39:27,991 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2019-10-07 03:39:27,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:39:27,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:39:27,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=132, Unknown=4, NotChecked=0, Total=182 [2019-10-07 03:39:27,992 INFO L87 Difference]: Start difference. First operand 1368 states and 1993 transitions. Second operand 6 states. [2019-10-07 03:39:48,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:39:48,593 INFO L93 Difference]: Finished difference Result 5025 states and 7565 transitions. [2019-10-07 03:39:48,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 03:39:48,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-07 03:39:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:39:48,626 INFO L225 Difference]: With dead ends: 5025 [2019-10-07 03:39:48,626 INFO L226 Difference]: Without dead ends: 3662 [2019-10-07 03:39:48,631 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=46, Invalid=132, Unknown=4, NotChecked=0, Total=182 [2019-10-07 03:39:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2019-10-07 03:39:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3506. [2019-10-07 03:39:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3506 states. [2019-10-07 03:39:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 5096 transitions. [2019-10-07 03:39:49,054 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 5096 transitions. Word has length 26 [2019-10-07 03:39:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:39:49,055 INFO L462 AbstractCegarLoop]: Abstraction has 3506 states and 5096 transitions. [2019-10-07 03:39:49,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:39:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 5096 transitions. [2019-10-07 03:39:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-07 03:39:49,057 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:39:49,057 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:39:49,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:39:49,260 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:39:49,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:39:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1669365593, now seen corresponding path program 1 times [2019-10-07 03:39:49,261 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:39:49,261 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:39:49,261 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:39:49,262 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:39:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:39:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:39:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-07 03:39:49,436 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:39:49,436 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:39:49,436 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 03:39:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:39:49,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:39:49,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:39:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:39:49,550 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:39:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:39:49,618 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:39:49,645 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-07 03:39:49,645 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:39:49,651 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:39:49,658 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:39:49,659 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:39:49,869 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 61 for LOIs [2019-10-07 03:39:50,116 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 14 [2019-10-07 03:39:50,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 14 [2019-10-07 03:39:50,215 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 47 [2019-10-07 03:39:51,553 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 23114 conjuctions. This might take some time... [2019-10-07 03:39:51,939 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 47 [2019-10-07 03:39:55,055 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 23114 conjuctions. This might take some time... [2019-10-07 03:39:55,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:39:55,721 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 03:39:55,731 INFO L168 Benchmark]: Toolchain (without parser) took 312398.39 ms. Allocated memory was 138.9 MB in the beginning and 1.1 GB in the end (delta: 964.2 MB). Free memory was 94.5 MB in the beginning and 279.8 MB in the end (delta: -185.3 MB). Peak memory consumption was 778.9 MB. Max. memory is 7.1 GB. [2019-10-07 03:39:55,733 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 03:39:55,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1730.22 ms. Allocated memory was 138.9 MB in the beginning and 242.2 MB in the end (delta: 103.3 MB). Free memory was 94.3 MB in the beginning and 177.4 MB in the end (delta: -83.0 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:39:55,737 INFO L168 Benchmark]: Boogie Preprocessor took 209.72 ms. Allocated memory is still 242.2 MB. Free memory was 177.4 MB in the beginning and 157.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:39:55,739 INFO L168 Benchmark]: RCFGBuilder took 229512.45 ms. Allocated memory was 242.2 MB in the beginning and 753.9 MB in the end (delta: 511.7 MB). Free memory was 157.6 MB in the beginning and 444.8 MB in the end (delta: -287.2 MB). Peak memory consumption was 603.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:39:55,740 INFO L168 Benchmark]: TraceAbstraction took 80937.73 ms. Allocated memory was 753.9 MB in the beginning and 1.1 GB in the end (delta: 349.2 MB). Free memory was 444.8 MB in the beginning and 279.8 MB in the end (delta: 165.0 MB). Peak memory consumption was 514.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:39:55,757 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1730.22 ms. Allocated memory was 138.9 MB in the beginning and 242.2 MB in the end (delta: 103.3 MB). Free memory was 94.3 MB in the beginning and 177.4 MB in the end (delta: -83.0 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 209.72 ms. Allocated memory is still 242.2 MB. Free memory was 177.4 MB in the beginning and 157.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229512.45 ms. Allocated memory was 242.2 MB in the beginning and 753.9 MB in the end (delta: 511.7 MB). Free memory was 157.6 MB in the beginning and 444.8 MB in the end (delta: -287.2 MB). Peak memory consumption was 603.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 80937.73 ms. Allocated memory was 753.9 MB in the beginning and 1.1 GB in the end (delta: 349.2 MB). Free memory was 444.8 MB in the beginning and 279.8 MB in the end (delta: 165.0 MB). Peak memory consumption was 514.2 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: 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...