/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-crafted/mapavg2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:16:54,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:16:54,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:16:54,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:16:54,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:16:54,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:16:54,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:16:54,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:16:54,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:16:54,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:16:54,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:16:54,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:16:54,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:16:54,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:16:54,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:16:54,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:16:54,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:16:54,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:16:54,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:16:54,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:16:54,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:16:54,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:16:54,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:16:54,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:16:54,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:16:54,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:16:54,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:16:54,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:16:54,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 01:16:54,541 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:16:54,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:16:54,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:16:54,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:16:54,543 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:16:54,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:16:54,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:16:54,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:16:54,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:16:54,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:16:54,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:16:54,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:16:54,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:16:54,545 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:16:54,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:16:54,545 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:16:54,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:16:54,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:16:54,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:16:54,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:16:54,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:16:54,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:16:54,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:16:54,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:16:54,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:16:54,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:16:54,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:16:54,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:16:54,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 01:16:54,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:16:54,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:16:54,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:16:54,844 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:16:54,845 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:16:54,845 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg2.i [2019-11-07 01:16:54,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe55690d/6a99de254db043588d3275d7a80a49d8/FLAG247d8b5ce [2019-11-07 01:16:55,413 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:16:55,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg2.i [2019-11-07 01:16:55,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe55690d/6a99de254db043588d3275d7a80a49d8/FLAG247d8b5ce [2019-11-07 01:16:55,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe55690d/6a99de254db043588d3275d7a80a49d8 [2019-11-07 01:16:55,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:16:55,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:16:55,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:55,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:16:55,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:16:55,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:55" (1/1) ... [2019-11-07 01:16:55,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b930ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:55, skipping insertion in model container [2019-11-07 01:16:55,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:55" (1/1) ... [2019-11-07 01:16:55,897 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:16:55,945 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:16:56,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:56,237 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:16:56,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:56,358 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:16:56,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56 WrapperNode [2019-11-07 01:16:56,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:56,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:16:56,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:16:56,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:16:56,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:16:56,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:16:56,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:16:56,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:16:56,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:16:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:16:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:16:56,471 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-11-07 01:16:56,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:16:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:16:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:16:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-11-07 01:16:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:16:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:16:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:16:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:16:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:16:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:16:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:16:56,873 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:16:56,873 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:16:56,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:56 BoogieIcfgContainer [2019-11-07 01:16:56,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:16:56,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:16:56,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:16:56,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:16:56,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:16:55" (1/3) ... [2019-11-07 01:16:56,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63014c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:56, skipping insertion in model container [2019-11-07 01:16:56,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (2/3) ... [2019-11-07 01:16:56,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63014c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:56, skipping insertion in model container [2019-11-07 01:16:56,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:56" (3/3) ... [2019-11-07 01:16:56,884 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg2.i [2019-11-07 01:16:56,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:16:56,901 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:16:56,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:16:56,933 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:16:56,933 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:16:56,933 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:16:56,933 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:16:56,934 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:16:56,934 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:16:56,934 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:16:56,934 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:16:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 01:16:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-07 01:16:56,957 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:56,958 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:56,960 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1953355565, now seen corresponding path program 1 times [2019-11-07 01:16:56,972 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:56,973 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201706599] [2019-11-07 01:16:56,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:16:57,197 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201706599] [2019-11-07 01:16:57,198 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:16:57,199 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:16:57,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613246206] [2019-11-07 01:16:57,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:57,207 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:57,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:57,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:57,228 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-11-07 01:16:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:57,282 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-11-07 01:16:57,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:57,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-07 01:16:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:57,301 INFO L225 Difference]: With dead ends: 41 [2019-11-07 01:16:57,302 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 01:16:57,310 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 01:16:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-07 01:16:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 01:16:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-07 01:16:57,369 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-11-07 01:16:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:57,370 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-07 01:16:57,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-07 01:16:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 01:16:57,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:57,376 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:57,376 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1072677037, now seen corresponding path program 1 times [2019-11-07 01:16:57,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:57,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465023278] [2019-11-07 01:16:57,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:16:57,498 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465023278] [2019-11-07 01:16:57,499 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847768571] [2019-11-07 01:16:57,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:57,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 01:16:57,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:16:57,620 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:16:57,681 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:16:57,681 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-11-07 01:16:57,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514081301] [2019-11-07 01:16:57,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:57,685 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:57,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:57,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:16:57,686 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-11-07 01:16:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:57,702 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-11-07 01:16:57,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:57,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-07 01:16:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:57,704 INFO L225 Difference]: With dead ends: 33 [2019-11-07 01:16:57,704 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 01:16:57,705 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:16:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 01:16:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-07 01:16:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 01:16:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-07 01:16:57,712 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-11-07 01:16:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:57,712 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-07 01:16:57,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-07 01:16:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-07 01:16:57,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:57,714 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:57,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:57,919 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:57,920 INFO L82 PathProgramCache]: Analyzing trace with hash 608739335, now seen corresponding path program 1 times [2019-11-07 01:16:57,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:57,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257313561] [2019-11-07 01:16:57,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:58,028 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257313561] [2019-11-07 01:16:58,028 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:16:58,029 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:16:58,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413687928] [2019-11-07 01:16:58,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:58,030 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:58,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:58,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:58,031 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-11-07 01:16:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:58,045 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-07 01:16:58,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:58,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-07 01:16:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:58,048 INFO L225 Difference]: With dead ends: 31 [2019-11-07 01:16:58,048 INFO L226 Difference]: Without dead ends: 22 [2019-11-07 01:16:58,050 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:58,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-07 01:16:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-07 01:16:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-07 01:16:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-07 01:16:58,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-11-07 01:16:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:58,067 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-07 01:16:58,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-07 01:16:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 01:16:58,069 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:58,069 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:58,070 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:58,071 INFO L82 PathProgramCache]: Analyzing trace with hash -824983385, now seen corresponding path program 1 times [2019-11-07 01:16:58,072 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:58,072 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814967122] [2019-11-07 01:16:58,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:58,183 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814967122] [2019-11-07 01:16:58,183 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258278796] [2019-11-07 01:16:58,184 INFO L94 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 [2019-11-07 01:16:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:16:58,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:58,332 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:58,366 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [223577449] [2019-11-07 01:16:58,399 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 01:16:58,400 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:16:58,408 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:16:58,420 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:16:58,421 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:16:58,542 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-11-07 01:17:00,836 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 1 for LOIs [2019-11-07 01:17:00,897 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 01:17:00,900 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 01:17:05,209 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_17 Int) (v_mapavg_~ret~0_BEFORE_RETURN_3 Int)) (let ((.cse9 (+ |c_main_#t~ret7| 4294967296)) (.cse10 (mod (div v_prenex_17 1000) 4294967296))) (let ((.cse3 (= |c_main_#t~ret7| .cse10)) (.cse4 (<= .cse10 2147483647)) (.cse2 (= 0 (mod v_prenex_17 1000))) (.cse0 (= .cse10 .cse9)) (.cse1 (< 2147483647 .cse10)) (.cse5 (<= 0 v_prenex_17)) (.cse7 (not (= 0 (mod v_mapavg_~ret~0_BEFORE_RETURN_3 1000)))) (.cse8 (< v_mapavg_~ret~0_BEFORE_RETURN_3 0)) (.cse6 (mod (+ (div v_mapavg_~ret~0_BEFORE_RETURN_3 1000) 1) 4294967296))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse4 .cse2) (and (= .cse6 |c_main_#t~ret7|) .cse7 .cse8 (<= .cse6 2147483647)) (and .cse0 .cse1 .cse5) (and (< 2147483647 .cse6) .cse7 .cse8 (= .cse6 .cse9)))))) (exists ((v_prenex_18 Int) (v_mapavg_~ret~0_BEFORE_RETURN_4 Int)) (let ((.cse17 (+ |c_main_#t~ret7| 4294967296)) (.cse21 (mod (div v_prenex_18 1000) 4294967296))) (let ((.cse12 (= (mod v_prenex_18 1000) 0)) (.cse11 (< 2147483647 .cse21)) (.cse13 (= .cse17 .cse21)) (.cse14 (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_4 1000) 0))) (.cse16 (< v_mapavg_~ret~0_BEFORE_RETURN_4 0)) (.cse15 (mod (+ (div v_mapavg_~ret~0_BEFORE_RETURN_4 1000) 1) 4294967296)) (.cse18 (= .cse21 |c_main_#t~ret7|)) (.cse19 (<= .cse21 2147483647)) (.cse20 (<= 0 v_prenex_18))) (or (and .cse11 .cse12 .cse13) (and .cse14 (< 2147483647 .cse15) .cse16 (= .cse15 .cse17)) (and .cse18 .cse19 .cse12) (and .cse20 .cse11 .cse13) (and .cse14 .cse16 (<= .cse15 2147483647) (= .cse15 |c_main_#t~ret7|)) (and .cse18 .cse19 .cse20)))))) is different from true [2019-11-07 01:17:07,348 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 01:17:07,349 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 13] total 19 [2019-11-07 01:17:07,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624294576] [2019-11-07 01:17:07,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 01:17:07,351 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:07,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 01:17:07,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=256, Unknown=3, NotChecked=32, Total=342 [2019-11-07 01:17:07,353 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 19 states. [2019-11-07 01:17:20,118 WARN L191 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 80 DAG size of output: 49