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/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:19:48,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:19:48,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:19:48,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:19:48,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:19:48,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:19:48,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:19:48,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:19:48,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:19:48,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:19:48,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:19:48,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:19:48,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:19:48,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:19:48,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:19:48,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:19:48,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:19:48,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:19:48,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:19:48,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:19:48,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:19:48,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:19:48,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:19:48,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:19:48,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:19:48,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:19:48,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:19:48,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:19:48,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:19:48,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:19:48,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:19:48,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:19:48,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:19:48,768 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:19:48,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:19:48,768 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:19:48,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:19:48,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:19:48,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:19:48,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:19:48,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:19:48,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:19:48,770 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:19:48,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:19:48,770 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:19:48,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:19:48,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:19:48,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:19:48,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:19:48,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:19:48,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:19:48,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:19:48,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:19:48,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:19:48,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:19:48,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:19:48,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:19:48,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:19:49,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:19:49,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:19:49,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:19:49,070 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:19:49,071 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:19:49,071 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2019-10-13 23:19:49,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92524b8c6/8480fd86d3ac4ca0953365e77f8a6113/FLAGf11978686 [2019-10-13 23:19:49,566 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:19:49,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2019-10-13 23:19:49,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92524b8c6/8480fd86d3ac4ca0953365e77f8a6113/FLAGf11978686 [2019-10-13 23:19:49,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92524b8c6/8480fd86d3ac4ca0953365e77f8a6113 [2019-10-13 23:19:49,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:19:49,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:19:49,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:49,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:19:49,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:19:49,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:49" (1/1) ... [2019-10-13 23:19:49,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a1e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:49, skipping insertion in model container [2019-10-13 23:19:49,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:49" (1/1) ... [2019-10-13 23:19:49,958 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:19:49,975 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:19:50,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:50,187 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:19:50,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:50,320 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:19:50,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50 WrapperNode [2019-10-13 23:19:50,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:50,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:19:50,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:19:50,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:19:50,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... [2019-10-13 23:19:50,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... [2019-10-13 23:19:50,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... [2019-10-13 23:19:50,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... [2019-10-13 23:19:50,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... [2019-10-13 23:19:50,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... [2019-10-13 23:19:50,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... [2019-10-13 23:19:50,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:19:50,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:19:50,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:19:50,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:19:50,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:19:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:19:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:19:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2019-10-13 23:19:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:19:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:19:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:19:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2019-10-13 23:19:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:19:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:19:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:19:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:19:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:19:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:19:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:19:50,820 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:19:50,821 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 23:19:50,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:50 BoogieIcfgContainer [2019-10-13 23:19:50,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:19:50,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:19:50,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:19:50,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:19:50,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:19:49" (1/3) ... [2019-10-13 23:19:50,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513a7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:50, skipping insertion in model container [2019-10-13 23:19:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:50" (2/3) ... [2019-10-13 23:19:50,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513a7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:50, skipping insertion in model container [2019-10-13 23:19:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:50" (3/3) ... [2019-10-13 23:19:50,830 INFO L109 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2019-10-13 23:19:50,841 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:19:50,849 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:19:50,861 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:19:50,887 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:19:50,887 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:19:50,888 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:19:50,888 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:19:50,888 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:19:50,888 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:19:50,888 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:19:50,888 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:19:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 23:19:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 23:19:50,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:50,913 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:50,915 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:50,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2112018211, now seen corresponding path program 1 times [2019-10-13 23:19:50,927 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:50,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003365246] [2019-10-13 23:19:50,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:50,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:50,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:19:51,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003365246] [2019-10-13 23:19:51,137 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:51,138 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:19:51,138 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003833762] [2019-10-13 23:19:51,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:19:51,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:51,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:19:51,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:19:51,163 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 23:19:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:51,194 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-10-13 23:19:51,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:19:51,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 23:19:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:51,204 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:19:51,204 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 23:19:51,208 INFO L600 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 [2019-10-13 23:19:51,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 23:19:51,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 23:19:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 23:19:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 23:19:51,246 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-10-13 23:19:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:51,247 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 23:19:51,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:19:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 23:19:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 23:19:51,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:51,250 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:51,250 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:51,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2049651994, now seen corresponding path program 1 times [2019-10-13 23:19:51,251 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:51,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523163942] [2019-10-13 23:19:51,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:51,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:51,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:19:51,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523163942] [2019-10-13 23:19:51,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075307066] [2019-10-13 23:19:51,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:19:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:51,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:19:51,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:19:51,484 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:19:51,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:19:51,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 23:19:51,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415008825] [2019-10-13 23:19:51,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:19:51,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:51,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:19:51,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:19:51,534 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-13 23:19:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:51,561 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-13 23:19:51,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:19:51,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 23:19:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:51,564 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:19:51,564 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 23:19:51,567 INFO L600 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 [2019-10-13 23:19:51,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 23:19:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 23:19:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 23:19:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 23:19:51,578 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 23:19:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:51,578 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 23:19:51,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:19:51,578 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 23:19:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 23:19:51,581 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:51,582 INFO L380 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] [2019-10-13 23:19:51,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:19:51,787 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:51,787 INFO L82 PathProgramCache]: Analyzing trace with hash -575014574, now seen corresponding path program 1 times [2019-10-13 23:19:51,788 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:51,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998254055] [2019-10-13 23:19:51,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:51,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:51,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:19:51,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998254055] [2019-10-13 23:19:51,888 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:51,888 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:19:51,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782120344] [2019-10-13 23:19:51,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:19:51,889 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:51,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:19:51,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:19:51,890 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-13 23:19:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:51,907 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 23:19:51,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:19:51,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 23:19:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:51,909 INFO L225 Difference]: With dead ends: 31 [2019-10-13 23:19:51,909 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 23:19:51,909 INFO L600 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 [2019-10-13 23:19:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 23:19:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 23:19:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 23:19:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 23:19:51,916 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-10-13 23:19:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:51,918 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 23:19:51,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:19:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 23:19:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 23:19:51,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:51,920 INFO L380 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] [2019-10-13 23:19:51,920 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:51,920 INFO L82 PathProgramCache]: Analyzing trace with hash -202958309, now seen corresponding path program 1 times [2019-10-13 23:19:51,921 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:51,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367898847] [2019-10-13 23:19:51,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:51,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:51,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:19:52,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367898847] [2019-10-13 23:19:52,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510560664] [2019-10-13 23:19:52,023 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 [2019-10-13 23:19:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:52,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:19:52,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:19:52,141 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:19:52,189 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079007702] [2019-10-13 23:19:52,229 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:19:52,230 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:52,238 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:52,246 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:52,247 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:52,451 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:09,507 INFO L199 IcfgInterpreter]: Interpreting procedure avg with input of size 1 for LOIs [2019-10-13 23:20:09,554 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:09,557 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:09,557 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:09,557 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 695#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:09,558 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 460#true [2019-10-13 23:20:09,558 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 602#(and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 76))) (<= 19 main_~i~2) (not (< main_~i~2 19))) [2019-10-13 23:20:09,558 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 686#(<= 0 avg_~i~0) [2019-10-13 23:20:09,558 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:09,558 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:09,559 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 120#(or (exists ((v_avg_~ret~0_BEFORE_RETURN_2 Int) (v_prenex_2 Int)) (or (and (= |main_#t~ret4| (mod (div v_prenex_2 20) 4294967296)) (not (< main_~i~1 20)) (not (<= (mod (+ (div v_prenex_2 20) 1) 4294967296) 2147483647)) (= (mod v_prenex_2 20) 0) (<= (mod (div v_prenex_2 20) 4294967296) 2147483647)) (and (= |main_#t~ret4| (mod (div v_prenex_2 20) 4294967296)) (not (< main_~i~1 20)) (not (< v_prenex_2 0)) (not (<= (mod (+ (div v_prenex_2 20) 1) 4294967296) 2147483647)) (<= (mod (div v_prenex_2 20) 4294967296) 2147483647)) (and (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296) 2147483647) (not (< main_~i~1 20)) (< v_avg_~ret~0_BEFORE_RETURN_2 0) (= |main_#t~ret4| (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296)) (<= (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) 2147483647) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_2 20) 0))) (and (not (< main_~i~1 20)) (not (<= (mod (div v_prenex_2 20) 4294967296) 2147483647)) (not (<= (mod (+ (div v_prenex_2 20) 1) 4294967296) 2147483647)) (= (mod v_prenex_2 20) 0) (= |main_#t~ret4| (+ (mod (div v_prenex_2 20) 4294967296) (- 4294967296)))) (and (= |main_#t~ret4| (+ (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) (- 4294967296))) (not (<= (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) 2147483647)) (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296) 2147483647) (not (< main_~i~1 20)) (= (mod v_avg_~ret~0_BEFORE_RETURN_2 20) 0)) (and (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296) 2147483647) (not (< main_~i~1 20)) (= |main_#t~ret4| (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296)) (<= (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) 2147483647) (= (mod v_avg_~ret~0_BEFORE_RETURN_2 20) 0)) (and (= |main_#t~ret4| (+ (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) (- 4294967296))) (not (< v_avg_~ret~0_BEFORE_RETURN_2 0)) (not (<= (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) 2147483647)) (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296) 2147483647) (not (< main_~i~1 20))) (and (not (< main_~i~1 20)) (= |main_#t~ret4| (+ (mod (+ (div v_prenex_2 20) 1) 4294967296) (- 4294967296))) (not (<= (mod (+ (div v_prenex_2 20) 1) 4294967296) 2147483647)) (< v_prenex_2 0) (not (= (mod v_prenex_2 20) 0)) (<= (mod (div v_prenex_2 20) 4294967296) 2147483647)) (and (not (< main_~i~1 20)) (not (<= (mod (div v_prenex_2 20) 4294967296) 2147483647)) (= |main_#t~ret4| (+ (mod (+ (div v_prenex_2 20) 1) 4294967296) (- 4294967296))) (not (<= (mod (+ (div v_prenex_2 20) 1) 4294967296) 2147483647)) (< v_prenex_2 0) (not (= (mod v_prenex_2 20) 0))) (and (not (<= (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) 2147483647)) (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296) 2147483647) (not (< main_~i~1 20)) (< v_avg_~ret~0_BEFORE_RETURN_2 0) (= |main_#t~ret4| (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296)) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_2 20) 0))) (and (not (< v_avg_~ret~0_BEFORE_RETURN_2 0)) (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_2 20) 1) 4294967296) 2147483647) (not (< main_~i~1 20)) (= |main_#t~ret4| (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296)) (<= (mod (div v_avg_~ret~0_BEFORE_RETURN_2 20) 4294967296) 2147483647)) (and (not (< main_~i~1 20)) (not (< v_prenex_2 0)) (not (<= (mod (div v_prenex_2 20) 4294967296) 2147483647)) (not (<= (mod (+ (div v_prenex_2 20) 1) 4294967296) 2147483647)) (= |main_#t~ret4| (+ (mod (div v_prenex_2 20) 4294967296) (- 4294967296)))))) (exists ((v_avg_~ret~0_BEFORE_RETURN_1 Int) (v_prenex_1 Int)) (or (and (not (< main_~i~1 20)) (<= (mod (div v_prenex_1 20) 4294967296) 2147483647) (= (mod v_prenex_1 20) 0) (= (mod (div v_prenex_1 20) 4294967296) |main_#t~ret4|)) (and (not (< main_~i~1 20)) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_1 20) 0)) (= (+ (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_1 20) 1) 4294967296) (- 4294967296)) |main_#t~ret4|) (< v_avg_~ret~0_BEFORE_RETURN_1 0) (not (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_1 20) 1) 4294967296) 2147483647))) (and (not (< main_~i~1 20)) (not (< v_prenex_1 0)) (<= (mod (div v_prenex_1 20) 4294967296) 2147483647) (= (mod (div v_prenex_1 20) 4294967296) |main_#t~ret4|)) (and (<= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_1 20) 1) 4294967296) 2147483647) (not (< main_~i~1 20)) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_1 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_1 0) (= (mod (+ (div v_avg_~ret~0_BEFORE_RETURN_1 20) 1) 4294967296) |main_#t~ret4|)) (and (not (<= (mod (div v_prenex_1 20) 4294967296) 2147483647)) (= |main_#t~ret4| (+ (mod (div v_prenex_1 20) 4294967296) (- 4294967296))) (not (< main_~i~1 20)) (not (< v_prenex_1 0))) (and (not (<= (mod (div v_prenex_1 20) 4294967296) 2147483647)) (= |main_#t~ret4| (+ (mod (div v_prenex_1 20) 4294967296) (- 4294967296))) (not (< main_~i~1 20)) (= (mod v_prenex_1 20) 0))))) [2019-10-13 23:20:09,559 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 399#true [2019-10-13 23:20:09,559 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 700#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:09,559 INFO L193 IcfgInterpreter]: Reachable states at location avgEXIT satisfy 691#(and (<= 0 avg_~i~0) (<= 20 avg_~i~0) (= (ite (<= (mod (ite (and (< avg_~ret~0 0) (not (= (mod avg_~ret~0 20) 0))) (+ (div avg_~ret~0 20) 1) (div avg_~ret~0 20)) 4294967296) 2147483647) (mod (ite (and (< avg_~ret~0 0) (not (= (mod avg_~ret~0 20) 0))) (+ (div avg_~ret~0 20) 1) (div avg_~ret~0 20)) 4294967296) (+ (mod (ite (and (< avg_~ret~0 0) (not (= (mod avg_~ret~0 20) 0))) (+ (div avg_~ret~0 20) 1) (div avg_~ret~0 20)) 4294967296) (- 4294967296))) |avg_#res|) (not (< avg_~i~0 20))) [2019-10-13 23:20:09,560 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:09,560 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 239#(or (not (= main_~ret~1 main_~ret2~0)) (not (= main_~ret~1 main_~ret5~0))) [2019-10-13 23:20:09,560 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 323#(or (not (= main_~ret~1 main_~ret2~0)) (not (= main_~ret~1 main_~ret5~0))) [2019-10-13 23:20:09,560 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 634#true [2019-10-13 23:20:09,560 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 597#true [2019-10-13 23:20:09,561 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (not (< main_~i~1 20)) (<= 20 main_~i~1)) [2019-10-13 23:20:09,561 INFO L193 IcfgInterpreter]: Reachable states at location avgENTRY satisfy 648#true [2019-10-13 23:20:09,561 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 639#true [2019-10-13 23:20:09,561 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:11,804 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:11,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:11,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770880145] [2019-10-13 23:20:11,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 23:20:11,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:11,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 23:20:11,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2019-10-13 23:20:11,807 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 17 states.