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/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:20:52,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:20:52,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:20:52,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:20:52,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:20:52,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:20:52,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:20:52,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:20:52,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:20:52,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:20:52,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:20:52,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:20:52,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:20:52,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:20:52,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:20:52,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:20:52,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:20:52,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:20:52,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:20:52,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:20:52,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:20:52,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:20:52,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:20:52,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:20:52,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:20:52,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:20:52,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:20:52,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:20:52,063 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 23:20:52,078 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:20:52,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:20:52,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:20:52,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:20:52,080 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:20:52,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:20:52,080 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:20:52,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:20:52,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:20:52,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:20:52,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:20:52,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:20:52,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:20:52,082 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:20:52,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:20:52,082 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:20:52,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:20:52,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:20:52,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:20:52,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:20:52,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:20:52,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:20:52,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:20:52,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:20:52,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:20:52,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:20:52,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:20:52,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:20:52,085 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 23:20:52,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:20:52,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:20:52,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:20:52,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:20:52,389 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:20:52,390 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i [2019-10-13 23:20:52,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9758ac5ef/5fcee74803c24cdca470ee02e91d3663/FLAGbee7a3b36 [2019-10-13 23:20:52,890 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:20:52,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep60-2.i [2019-10-13 23:20:52,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9758ac5ef/5fcee74803c24cdca470ee02e91d3663/FLAGbee7a3b36 [2019-10-13 23:20:53,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9758ac5ef/5fcee74803c24cdca470ee02e91d3663 [2019-10-13 23:20:53,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:20:53,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:20:53,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:53,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:20:53,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:20:53,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e605b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53, skipping insertion in model container [2019-10-13 23:20:53,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,340 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:20:53,359 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:20:53,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:53,599 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:20:53,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:53,716 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:20:53,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53 WrapperNode [2019-10-13 23:20:53,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:53,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:20:53,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:20:53,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:20:53,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (1/1) ... [2019-10-13 23:20:53,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:20:53,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:20:53,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:20:53,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:20:53,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (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 23:20:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:20:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:20:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2019-10-13 23:20:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:20:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:20:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:20:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2019-10-13 23:20:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:20:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:20:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:20:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:20:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:20:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:20:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:20:54,283 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:20:54,283 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 23:20:54,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:54 BoogieIcfgContainer [2019-10-13 23:20:54,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:20:54,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:20:54,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:20:54,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:20:54,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:20:53" (1/3) ... [2019-10-13 23:20:54,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36368d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:54, skipping insertion in model container [2019-10-13 23:20:54,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:53" (2/3) ... [2019-10-13 23:20:54,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36368d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:54, skipping insertion in model container [2019-10-13 23:20:54,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:54" (3/3) ... [2019-10-13 23:20:54,295 INFO L109 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2019-10-13 23:20:54,305 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:20:54,314 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:20:54,326 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:20:54,352 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:20:54,352 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:20:54,352 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:20:54,352 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:20:54,353 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:20:54,353 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:20:54,353 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:20:54,353 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:20:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 23:20:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 23:20:54,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:54,381 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 23:20:54,383 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1553264816, now seen corresponding path program 1 times [2019-10-13 23:20:54,399 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:54,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001975935] [2019-10-13 23:20:54,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:54,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:54,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:54,593 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 23:20:54,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001975935] [2019-10-13 23:20:54,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:54,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:54,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233538573] [2019-10-13 23:20:54,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:54,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:54,620 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 23:20:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:54,656 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-10-13 23:20:54,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:54,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 23:20:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:54,667 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:20:54,667 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 23:20:54,671 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 23:20:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 23:20:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 23:20:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 23:20:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 23:20:54,720 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-10-13 23:20:54,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:54,720 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 23:20:54,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 23:20:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 23:20:54,723 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:54,723 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 23:20:54,724 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:54,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1274606805, now seen corresponding path program 1 times [2019-10-13 23:20:54,725 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:54,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469883874] [2019-10-13 23:20:54,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:54,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:54,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:54,872 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 23:20:54,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469883874] [2019-10-13 23:20:54,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050439644] [2019-10-13 23:20:54,874 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 23:20:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:54,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:20:54,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:55,008 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 23:20:55,008 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:55,053 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 23:20:55,054 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:20:55,054 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 23:20:55,055 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156311446] [2019-10-13 23:20:55,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:55,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:55,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:55,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:20:55,058 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-13 23:20:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:55,087 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-13 23:20:55,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:55,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 23:20:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:55,091 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:20:55,091 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 23:20:55,093 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 23:20:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 23:20:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 23:20:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 23:20:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 23:20:55,105 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 23:20:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:55,106 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 23:20:55,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 23:20:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 23:20:55,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:55,111 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 23:20:55,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:55,316 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash -544560989, now seen corresponding path program 1 times [2019-10-13 23:20:55,318 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:55,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111076729] [2019-10-13 23:20:55,318 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:55,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:55,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:55,449 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 23:20:55,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111076729] [2019-10-13 23:20:55,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:55,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:55,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109499348] [2019-10-13 23:20:55,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:55,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:55,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:55,453 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-13 23:20:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:55,472 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 23:20:55,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:55,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 23:20:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:55,475 INFO L225 Difference]: With dead ends: 31 [2019-10-13 23:20:55,475 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 23:20:55,476 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 23:20:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 23:20:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 23:20:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 23:20:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 23:20:55,489 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-10-13 23:20:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:55,494 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 23:20:55,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 23:20:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 23:20:55,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:55,497 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 23:20:55,499 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:55,500 INFO L82 PathProgramCache]: Analyzing trace with hash -5957836, now seen corresponding path program 1 times [2019-10-13 23:20:55,500 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:55,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473431358] [2019-10-13 23:20:55,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:55,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:55,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:55,650 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 23:20:55,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473431358] [2019-10-13 23:20:55,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72069889] [2019-10-13 23:20:55,651 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 23:20:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:55,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:55,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:55,787 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 23:20:55,788 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:55,839 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 23:20:55,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [788078847] [2019-10-13 23:20:55,881 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:55,881 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:55,889 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:55,902 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:55,902 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:56,102 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:58,367 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:20:58,453 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:58,459 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:58,459 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:58,460 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:58,460 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_prenex_2 Int) (v_prenex_1 Int) (v_sep_~ret~0_BEFORE_RETURN_2 Int) (v_sep_~ret~0_BEFORE_RETURN_1 Int)) (or (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~ret~1 (mod v_prenex_2 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_2 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~ret~1 (mod v_prenex_1 4294967296)) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_1 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~ret~1 (+ (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) (- 4294967296))) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647)) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) (- 4294967296))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:58,460 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:58,460 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:20:58,461 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_sep_~ret~0_BEFORE_RETURN_6 Int) (v_sep_~ret~0_BEFORE_RETURN_5 Int)) (or (and (not (< main_~i~2 59)) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= (mod v_prenex_29 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_29 4294967296) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) (- 4294967296)) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236))))))) (and (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_sep_~ret~0_BEFORE_RETURN_6 Int) (v_sep_~ret~0_BEFORE_RETURN_5 Int)) (or (and (not (< main_~i~2 59)) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= (mod v_prenex_29 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_29 4294967296) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) (- 4294967296)) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:58,461 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:20:58,461 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:20:58,462 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 23:20:58,462 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 23:20:58,462 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(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 23:20:58,462 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:20:58,463 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:58,463 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 59)) (<= 59 main_~i~2) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) [2019-10-13 23:20:58,463 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 60)) (<= 60 sep_~i~0) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 0 sep_~i~0)) [2019-10-13 23:20:58,463 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_prenex_2 Int) (v_sep_~ret~0_BEFORE_RETURN_2 Int)) (or (and (= (mod v_prenex_2 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)) (<= (mod v_prenex_2 4294967296) 2147483647)) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647))))) (exists ((v_prenex_1 Int) (v_sep_~ret~0_BEFORE_RETURN_1 Int)) (or (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647)) (not (< main_~i~1 60)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) (- 4294967296)) |main_#t~ret6|)) (and (= (mod v_prenex_1 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)) (<= (mod v_prenex_1 4294967296) 2147483647))))) [2019-10-13 23:20:58,464 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:20:58,464 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:20:58,464 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:20:58,464 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:20:58,854 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:58,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:58,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656943032] [2019-10-13 23:20:58,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:58,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:58,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:58,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:58,860 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 18 states. [2019-10-13 23:20:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:59,596 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-13 23:20:59,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:59,596 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2019-10-13 23:20:59,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:59,597 INFO L225 Difference]: With dead ends: 40 [2019-10-13 23:20:59,597 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 23:20:59,598 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2019-10-13 23:20:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 23:20:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 23:20:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 23:20:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 23:20:59,605 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2019-10-13 23:20:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:59,605 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 23:20:59,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 23:20:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 23:20:59,607 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:59,607 INFO L380 BasicCegarLoop]: trace histogram [4, 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 23:20:59,815 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:59,816 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1961836647, now seen corresponding path program 2 times [2019-10-13 23:20:59,817 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:59,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480276156] [2019-10-13 23:20:59,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:59,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:59,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:59,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480276156] [2019-10-13 23:20:59,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531314654] [2019-10-13 23:20:59,940 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:00,016 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 23:21:00,016 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:21:00,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:21:00,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:21:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:21:00,038 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:21:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:21:00,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [482394798] [2019-10-13 23:21:00,083 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:21:00,084 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:21:00,084 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:21:00,084 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:21:00,085 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:21:00,118 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:21:01,693 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:21:01,732 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:21:01,736 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:21:01,736 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:21:01,736 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:21:01,737 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_prenex_196 Int) (v_sep_~ret~0_BEFORE_RETURN_28 Int) (v_sep_~ret~0_BEFORE_RETURN_27 Int) (v_prenex_195 Int)) (or (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_prenex_195 4294967296) main_~ret~1) (<= (mod v_prenex_195 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) main_~ret~1) (not (<= (mod v_prenex_196 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) main_~ret~1) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:21:01,737 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:21:01,737 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:21:01,738 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_sep_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_224 Int) (v_sep_~ret~0_BEFORE_RETURN_32 Int) (v_prenex_223 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_prenex_223 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_prenex_223 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= main_~ret5~0 (mod v_prenex_224 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_sep_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_224 Int) (v_sep_~ret~0_BEFORE_RETURN_32 Int) (v_prenex_223 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_prenex_223 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_prenex_223 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= main_~ret5~0 (mod v_prenex_224 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))))) [2019-10-13 23:21:01,738 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:21:01,738 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:21:01,738 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 23:21:01,738 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 23:21:01,739 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(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 23:21:01,739 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:21:01,739 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:21:01,739 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 59)) (<= 59 main_~i~2) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) [2019-10-13 23:21:01,739 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 60)) (<= 60 sep_~i~0) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 0 sep_~i~0)) [2019-10-13 23:21:01,740 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_27 Int) (v_prenex_195 Int)) (or (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (not (< main_~i~1 60))) (and (= (mod v_prenex_195 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)) (<= (mod v_prenex_195 4294967296) 2147483647)))) (exists ((v_prenex_196 Int) (v_sep_~ret~0_BEFORE_RETURN_28 Int)) (or (and (not (<= (mod v_prenex_196 4294967296) 2147483647)) (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60))) (and (not (< main_~i~1 60)) (= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) |main_#t~ret6|) (<= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647))))) [2019-10-13 23:21:01,740 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:21:01,740 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:21:01,740 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:21:01,740 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:21:02,185 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:21:02,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4, 11] total 21 [2019-10-13 23:21:02,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653274815] [2019-10-13 23:21:02,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 23:21:02,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:02,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 23:21:02,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:21:02,188 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 22 states. [2019-10-13 23:21:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:03,102 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-10-13 23:21:03,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 23:21:03,103 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 32 [2019-10-13 23:21:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:03,104 INFO L225 Difference]: With dead ends: 44 [2019-10-13 23:21:03,104 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 23:21:03,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 23:21:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 23:21:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-13 23:21:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 23:21:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-13 23:21:03,112 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2019-10-13 23:21:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:03,112 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-13 23:21:03,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 23:21:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-13 23:21:03,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:21:03,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:03,114 INFO L380 BasicCegarLoop]: trace histogram [12, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:21:03,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:03,326 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:03,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1603069542, now seen corresponding path program 3 times [2019-10-13 23:21:03,327 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:03,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108798245] [2019-10-13 23:21:03,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:03,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:03,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:21:03,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108798245] [2019-10-13 23:21:03,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011890651] [2019-10-13 23:21:03,449 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:03,597 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:21:03,598 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:21:03,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 23:21:03,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:21:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:21:03,616 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:21:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:21:03,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590266321] [2019-10-13 23:21:03,700 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:21:03,700 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:21:03,701 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:21:03,701 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:21:03,701 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:21:03,722 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:21:05,310 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:21:05,343 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:21:05,346 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:21:05,346 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:21:05,347 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:21:05,347 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_389 Int) (v_sep_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (<= main_~ret~1 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) main_~ret~1) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_prenex_389 4294967296) main_~ret~1) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_389 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) main_~ret~1) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) main_~ret~1) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))))) (exists ((v_sep_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_389 Int) (v_sep_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (<= main_~ret~1 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) main_~ret~1) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) main_~ret~1) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_prenex_389 4294967296) main_~ret~1) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_389 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) main_~ret~1) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648)))))) [2019-10-13 23:21:05,347 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:21:05,348 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:21:05,348 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_417 Int) (v_sep_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_418 Int) (v_sep_~ret~0_BEFORE_RETURN_58 Int)) (or (and (not (< main_~i~2 59)) (= (mod v_prenex_417 4294967296) main_~ret5~0) (<= (mod v_prenex_417 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) (- 4294967296)) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_418 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_418 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296)) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236))))))) (and (exists ((v_prenex_417 Int) (v_sep_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_418 Int) (v_sep_~ret~0_BEFORE_RETURN_58 Int)) (or (and (not (< main_~i~2 59)) (= (mod v_prenex_417 4294967296) main_~ret5~0) (<= (mod v_prenex_417 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) (- 4294967296)) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_418 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_418 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296)) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:21:05,348 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:21:05,348 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:21:05,348 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 23:21:05,349 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 23:21:05,349 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(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 23:21:05,349 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:21:05,349 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:21:05,349 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 59)) (<= 59 main_~i~2) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) [2019-10-13 23:21:05,350 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 60)) (<= 60 sep_~i~0) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 0 sep_~i~0)) [2019-10-13 23:21:05,350 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_389 Int)) (or (and (not (< main_~i~1 60)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) |main_#t~ret6|)) (and (not (< main_~i~1 60)) (<= (mod v_prenex_389 4294967296) 2147483647) (= (mod v_prenex_389 4294967296) |main_#t~ret6|)))) (exists ((v_sep_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647)) (and (not (< main_~i~1 60)) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (= |main_#t~ret6| (+ (mod v_prenex_390 4294967296) (- 4294967296))))))) [2019-10-13 23:21:05,350 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:21:05,350 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:21:05,350 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:21:05,351 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:21:05,719 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:21:05,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 25 [2019-10-13 23:21:05,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462198009] [2019-10-13 23:21:05,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 23:21:05,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:05,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 23:21:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-10-13 23:21:05,726 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 26 states. [2019-10-13 23:21:06,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:06,679 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-10-13 23:21:06,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:21:06,679 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2019-10-13 23:21:06,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:06,680 INFO L225 Difference]: With dead ends: 54 [2019-10-13 23:21:06,680 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 23:21:06,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=369, Invalid=1701, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 23:21:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 23:21:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 23:21:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 23:21:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-13 23:21:06,690 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 42 [2019-10-13 23:21:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:06,690 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-13 23:21:06,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 23:21:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-13 23:21:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 23:21:06,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:06,692 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:21:06,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:06,900 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1700782945, now seen corresponding path program 4 times [2019-10-13 23:21:06,901 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:06,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145939386] [2019-10-13 23:21:06,902 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:06,902 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:06,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:21:07,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145939386] [2019-10-13 23:21:07,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874561010] [2019-10-13 23:21:07,074 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:07,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 23:21:07,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:21:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:21:07,252 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:21:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:21:07,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [156483260] [2019-10-13 23:21:07,523 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:21:07,524 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:21:07,525 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:21:07,525 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:21:07,525 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:21:07,550 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:21:09,196 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:21:09,226 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:21:09,229 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:21:09,229 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:21:09,230 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:21:09,230 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(or (exists ((v_prenex_583 Int) (v_prenex_584 Int) (v_sep_~ret~0_BEFORE_RETURN_80 Int) (v_sep_~ret~0_BEFORE_RETURN_79 Int)) (or (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) (- 4294967296)) main_~ret~1) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= (mod v_prenex_584 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_584 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) main_~ret~1) (<= 0 (+ main_~ret~1 2147483648))))) (exists ((v_prenex_583 Int) (v_prenex_584 Int) (v_sep_~ret~0_BEFORE_RETURN_80 Int) (v_sep_~ret~0_BEFORE_RETURN_79 Int)) (or (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) main_~ret~1) (<= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) (- 4294967296)) main_~ret~1) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= (mod v_prenex_584 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_584 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648)))))) [2019-10-13 23:21:09,230 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:21:09,230 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:21:09,231 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_sep_~ret~0_BEFORE_RETURN_84 Int) (v_sep_~ret~0_BEFORE_RETURN_83 Int)) (or (and (not (< main_~i~2 59)) (<= (mod v_prenex_611 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_prenex_611 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_612 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_sep_~ret~0_BEFORE_RETURN_84 Int) (v_sep_~ret~0_BEFORE_RETURN_83 Int)) (or (and (not (< main_~i~2 59)) (<= (mod v_prenex_611 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_prenex_611 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_612 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))))) [2019-10-13 23:21:09,231 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:21:09,231 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:21:09,231 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 23:21:09,232 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 23:21:09,232 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(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 23:21:09,232 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:21:09,232 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:21:09,232 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 59)) (<= 59 main_~i~2) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) [2019-10-13 23:21:09,232 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 60)) (<= 60 sep_~i~0) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 0 sep_~i~0)) [2019-10-13 23:21:09,233 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_prenex_583 Int) (v_sep_~ret~0_BEFORE_RETURN_79 Int)) (or (and (= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647)) (and (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_prenex_583 4294967296) 2147483647))))) (exists ((v_prenex_584 Int) (v_sep_~ret~0_BEFORE_RETURN_80 Int)) (or (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647))) (and (not (< main_~i~1 60)) (= (mod v_prenex_584 4294967296) |main_#t~ret6|) (<= (mod v_prenex_584 4294967296) 2147483647))))) [2019-10-13 23:21:09,233 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:21:09,233 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:21:09,233 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:21:09,233 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:21:09,667 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:21:09,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 11] total 39 [2019-10-13 23:21:09,667 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305650280] [2019-10-13 23:21:09,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-13 23:21:09,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:09,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-13 23:21:09,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 23:21:09,671 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 40 states. [2019-10-13 23:21:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:13,223 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2019-10-13 23:21:13,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-10-13 23:21:13,223 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 49 [2019-10-13 23:21:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:13,224 INFO L225 Difference]: With dead ends: 68 [2019-10-13 23:21:13,224 INFO L226 Difference]: Without dead ends: 50 [2019-10-13 23:21:13,227 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1244, Invalid=4158, Unknown=0, NotChecked=0, Total=5402 [2019-10-13 23:21:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-13 23:21:13,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-10-13 23:21:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-13 23:21:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-10-13 23:21:13,237 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 49 [2019-10-13 23:21:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:13,237 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-10-13 23:21:13,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-13 23:21:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-10-13 23:21:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-13 23:21:13,239 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:13,239 INFO L380 BasicCegarLoop]: trace histogram [26, 12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:21:13,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:13,444 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:13,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1773432895, now seen corresponding path program 5 times [2019-10-13 23:21:13,445 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:13,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473492866] [2019-10-13 23:21:13,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:13,446 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:13,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:21:13,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473492866] [2019-10-13 23:21:13,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007816200] [2019-10-13 23:21:13,917 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:14,087 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 23:21:14,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:21:14,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:21:14,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:21:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-10-13 23:21:14,131 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:21:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2019-10-13 23:21:14,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534442758] [2019-10-13 23:21:14,173 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:21:14,173 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:21:14,174 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:21:14,174 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:21:14,174 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:21:14,211 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:21:15,521 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:21:15,551 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:21:15,554 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:21:15,554 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:21:15,554 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:21:15,554 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_prenex_777 Int) (v_sep_~ret~0_BEFORE_RETURN_105 Int) (v_sep_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) (- 4294967296))) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (<= (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (= main_~ret~1 (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296)) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (mod v_prenex_778 4294967296)) (<= (mod v_prenex_778 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~ret~1 (+ (mod v_prenex_777 4294967296) (- 4294967296))) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:21:15,555 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:21:15,555 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:21:15,555 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_sep_~ret~0_BEFORE_RETURN_110 Int) (v_prenex_806 Int) (v_sep_~ret~0_BEFORE_RETURN_109 Int) (v_prenex_805 Int)) (or (and (not (< main_~i~2 59)) (= main_~ret5~0 (mod v_prenex_806 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_806 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) (- 4294967296)) main_~ret5~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= main_~ret5~0 (mod v_prenex_805 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_805 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_sep_~ret~0_BEFORE_RETURN_110 Int) (v_prenex_806 Int) (v_sep_~ret~0_BEFORE_RETURN_109 Int) (v_prenex_805 Int)) (or (and (not (< main_~i~2 59)) (= main_~ret5~0 (mod v_prenex_806 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_806 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) (- 4294967296)) main_~ret5~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= main_~ret5~0 (mod v_prenex_805 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_805 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))))) [2019-10-13 23:21:15,555 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:21:15,555 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:21:15,556 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 23:21:15,556 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 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0))) [2019-10-13 23:21:15,556 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(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 23:21:15,556 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:21:15,556 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:21:15,557 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 59)) (<= 59 main_~i~2) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) [2019-10-13 23:21:15,557 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 60)) (<= 60 sep_~i~0) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 0 sep_~i~0)) [2019-10-13 23:21:15,557 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) 2147483647)) (not (< main_~i~1 60)) (= |main_#t~ret6| (+ (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) (- 4294967296)))) (and (not (< main_~i~1 60)) (= |main_#t~ret6| (mod v_prenex_778 4294967296)) (<= (mod v_prenex_778 4294967296) 2147483647)))) (exists ((v_prenex_777 Int) (v_sep_~ret~0_BEFORE_RETURN_105 Int)) (or (and (<= (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (not (< main_~i~1 60)) (= |main_#t~ret6| (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296))) (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (not (< main_~i~1 60)) (= (+ (mod v_prenex_777 4294967296) (- 4294967296)) |main_#t~ret6|))))) [2019-10-13 23:21:15,557 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:21:15,557 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:21:15,557 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:21:15,558 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:21:16,073 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:21:16,073 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 4, 4, 11] total 43 [2019-10-13 23:21:16,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817524530] [2019-10-13 23:21:16,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-13 23:21:16,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:16,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-13 23:21:16,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=1443, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 23:21:16,077 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 44 states. [2019-10-13 23:21:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:18,346 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-10-13 23:21:18,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 23:21:18,347 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 63 [2019-10-13 23:21:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:18,348 INFO L225 Difference]: With dead ends: 72 [2019-10-13 23:21:18,348 INFO L226 Difference]: Without dead ends: 54 [2019-10-13 23:21:18,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1349, Invalid=5457, Unknown=0, NotChecked=0, Total=6806 [2019-10-13 23:21:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-13 23:21:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-10-13 23:21:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-13 23:21:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-10-13 23:21:18,361 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 63 [2019-10-13 23:21:18,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:18,361 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-10-13 23:21:18,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-10-13 23:21:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-10-13 23:21:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-13 23:21:18,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:18,363 INFO L380 BasicCegarLoop]: trace histogram [27, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:21:18,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:18,569 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:18,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash -806625269, now seen corresponding path program 6 times [2019-10-13 23:21:18,570 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:18,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199131956] [2019-10-13 23:21:18,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:18,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:18,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:21:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 23:21:19,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199131956] [2019-10-13 23:21:19,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787834617] [2019-10-13 23:21:19,111 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:19,327 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:21:19,327 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:21:19,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 23:21:19,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:21:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 23:21:19,390 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:21:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 23:21:20,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1271407062] [2019-10-13 23:21:20,379 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:21:20,379 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:21:20,379 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:21:20,380 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:21:20,380 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:21:20,394 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:21:21,624 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:21:21,652 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:21:21,655 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:21:21,655 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:21:21,655 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:21:21,655 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_sep_~ret~0_BEFORE_RETURN_131 Int) (v_sep_~ret~0_BEFORE_RETURN_132 Int) (v_prenex_972 Int) (v_prenex_971 Int)) (or (and (= main_~ret~1 (mod v_prenex_972 4294967296)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_972 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_prenex_971 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~ret~1 (+ (mod v_prenex_971 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))) (and (= main_~ret~1 (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:21:21,656 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:21:21,656 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:21:21,656 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_sep_~ret~0_BEFORE_RETURN_135 Int) (v_sep_~ret~0_BEFORE_RETURN_136 Int) (v_prenex_1000 Int) (v_prenex_999 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_prenex_999 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_prenex_999 4294967296) (- 4294967296)) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) (- 4294967296)) main_~ret5~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= (mod v_prenex_1000 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_1000 4294967296) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_sep_~ret~0_BEFORE_RETURN_135 Int) (v_sep_~ret~0_BEFORE_RETURN_136 Int) (v_prenex_1000 Int) (v_prenex_999 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_prenex_999 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_prenex_999 4294967296) (- 4294967296)) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) (- 4294967296)) main_~ret5~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (not (< main_~i~2 59)) (<= (mod v_prenex_1000 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_1000 4294967296) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))))) [2019-10-13 23:21:21,656 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:21:21,656 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:21:21,657 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 23:21:21,657 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 23:21:21,657 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(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 23:21:21,657 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:21:21,657 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:21:21,657 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 59)) (<= 59 main_~i~2) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) [2019-10-13 23:21:21,658 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 60)) (<= 60 sep_~i~0) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 0 sep_~i~0)) [2019-10-13 23:21:21,658 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_132 Int) (v_prenex_972 Int)) (or (and (= (mod v_prenex_972 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)) (<= (mod v_prenex_972 4294967296) 2147483647)) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647)) (not (< main_~i~1 60)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) (- 4294967296)) |main_#t~ret6|)))) (exists ((v_sep_~ret~0_BEFORE_RETURN_131 Int) (v_prenex_971 Int)) (or (and (= |main_#t~ret6| (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296)) (not (< main_~i~1 60)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647)) (and (not (<= (mod v_prenex_971 4294967296) 2147483647)) (= (+ (mod v_prenex_971 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)))))) [2019-10-13 23:21:21,658 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:21:21,658 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:21:21,658 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:21:21,658 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:21:22,335 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:21:22,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30, 11] total 69 [2019-10-13 23:21:22,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083167969] [2019-10-13 23:21:22,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 23:21:22,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:22,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 23:21:22,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1740, Invalid=3090, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 23:21:22,342 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 70 states.