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/max60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:20:16,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:20:16,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:20:16,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:20:16,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:20:16,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:20:16,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:20:16,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:20:16,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:20:16,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:20:16,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:20:16,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:20:16,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:20:16,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:20:16,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:20:16,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:20:16,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:20:16,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:20:16,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:20:16,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:20:16,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:20:16,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:20:16,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:20:16,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:20:16,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:20:16,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:20:16,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:20:16,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:20:16,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:20:16,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:20:16,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:20:16,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:20:16,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:20:16,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:20:16,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:20:16,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:20:16,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:20:16,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:20:16,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:20:16,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:20:16,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:20:16,868 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 23:20:16,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:20:16,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:20:16,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:20:16,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:20:16,888 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:20:16,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:20:16,889 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:20:16,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:20:16,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:20:16,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:20:16,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:20:16,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:20:16,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:20:16,890 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:20:16,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:20:16,890 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:20:16,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:20:16,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:20:16,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:20:16,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:20:16,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:20:16,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:20:16,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:20:16,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:20:16,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:20:16,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:20:16,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:20:16,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:20:16,893 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 23:20:17,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:20:17,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:20:17,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:20:17,199 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:20:17,200 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:20:17,200 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max60-2.i [2019-10-13 23:20:17,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8ec0505/074c829e01624a9abd442bd12f101762/FLAGe87dbf9ca [2019-10-13 23:20:17,614 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:20:17,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max60-2.i [2019-10-13 23:20:17,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8ec0505/074c829e01624a9abd442bd12f101762/FLAGe87dbf9ca [2019-10-13 23:20:18,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8ec0505/074c829e01624a9abd442bd12f101762 [2019-10-13 23:20:18,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:20:18,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:20:18,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:18,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:20:18,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:20:18,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6063a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18, skipping insertion in model container [2019-10-13 23:20:18,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,047 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:20:18,070 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:20:18,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:18,337 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:20:18,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:18,383 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:20:18,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18 WrapperNode [2019-10-13 23:20:18,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:18,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:20:18,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:20:18,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:20:18,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (1/1) ... [2019-10-13 23:20:18,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:20:18,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:20:18,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:20:18,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:20:18,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (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 23:20:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:20:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:20:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2019-10-13 23:20:18,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:20:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:20:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:20:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure max [2019-10-13 23:20:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:20:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:20:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:20:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:20:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:20:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:20:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:20:18,990 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:20:18,990 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 23:20:18,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:18 BoogieIcfgContainer [2019-10-13 23:20:18,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:20:18,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:20:18,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:20:18,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:20:18,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:20:18" (1/3) ... [2019-10-13 23:20:18,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743321f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:18, skipping insertion in model container [2019-10-13 23:20:18,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:18" (2/3) ... [2019-10-13 23:20:18,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743321f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:18, skipping insertion in model container [2019-10-13 23:20:18,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:18" (3/3) ... [2019-10-13 23:20:19,001 INFO L109 eAbstractionObserver]: Analyzing ICFG max60-2.i [2019-10-13 23:20:19,012 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:20:19,021 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:20:19,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:20:19,057 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:20:19,057 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:20:19,058 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:20:19,058 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:20:19,058 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:20:19,058 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:20:19,058 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:20:19,058 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:20:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 23:20:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 23:20:19,084 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:19,085 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 23:20:19,087 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash 855740909, now seen corresponding path program 1 times [2019-10-13 23:20:19,101 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:19,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280884114] [2019-10-13 23:20:19,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:19,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:19,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:19,281 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 23:20:19,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280884114] [2019-10-13 23:20:19,283 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:19,283 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:19,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504285870] [2019-10-13 23:20:19,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:19,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:19,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:19,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:19,307 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 23:20:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:19,343 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-10-13 23:20:19,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:19,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 23:20:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:19,360 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:20:19,360 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 23:20:19,363 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 23:20:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 23:20:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 23:20:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 23:20:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 23:20:19,401 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-10-13 23:20:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:19,402 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 23:20:19,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 23:20:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 23:20:19,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:19,405 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 23:20:19,405 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:19,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1075349738, now seen corresponding path program 1 times [2019-10-13 23:20:19,406 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:19,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918570051] [2019-10-13 23:20:19,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:19,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:19,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:19,529 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 23:20:19,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918570051] [2019-10-13 23:20:19,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418636839] [2019-10-13 23:20:19,533 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 23:20:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:19,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:20:19,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:19,657 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 23:20:19,658 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:19,700 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 23:20:19,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:20:19,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 23:20:19,701 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678092765] [2019-10-13 23:20:19,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:19,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:19,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:19,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:20:19,704 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-13 23:20:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:19,717 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-13 23:20:19,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:19,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 23:20:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:19,720 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:20:19,720 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 23:20:19,721 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 23:20:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 23:20:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 23:20:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 23:20:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 23:20:19,728 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 23:20:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:19,728 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 23:20:19,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 23:20:19,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 23:20:19,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:19,731 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 23:20:19,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:19,935 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash 447698074, now seen corresponding path program 1 times [2019-10-13 23:20:19,937 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:19,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002619480] [2019-10-13 23:20:19,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:19,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:19,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:20,017 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 23:20:20,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002619480] [2019-10-13 23:20:20,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:20,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:20,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838721765] [2019-10-13 23:20:20,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:20,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:20,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:20,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:20,020 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-13 23:20:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:20,036 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 23:20:20,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:20,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 23:20:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:20,038 INFO L225 Difference]: With dead ends: 31 [2019-10-13 23:20:20,038 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 23:20:20,039 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 23:20:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 23:20:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 23:20:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 23:20:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 23:20:20,045 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-10-13 23:20:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:20,047 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 23:20:20,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 23:20:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 23:20:20,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:20,049 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 23:20:20,050 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:20,050 INFO L82 PathProgramCache]: Analyzing trace with hash -69054062, now seen corresponding path program 1 times [2019-10-13 23:20:20,050 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:20,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105711852] [2019-10-13 23:20:20,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:20,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:20,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:20,173 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 23:20:20,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105711852] [2019-10-13 23:20:20,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975583152] [2019-10-13 23:20:20,174 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 23:20:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:20,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:20,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:20,276 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 23:20:20,276 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:20,318 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 23:20:20,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219561974] [2019-10-13 23:20:20,347 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:20,347 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:20,354 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:20,362 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:20,363 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:20,499 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:22,525 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:22,578 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:22,583 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:22,583 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:22,584 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 640#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:22,584 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 636#(and (not (< max_~i~0 60)) (<= 60 max_~i~0) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:22,584 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 467#true [2019-10-13 23:20:22,585 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 510#(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 23:20:22,585 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 631#(<= 0 max_~i~0) [2019-10-13 23:20:22,585 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 23:20:22,585 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 23:20:22,585 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 108#(or (exists ((v_prenex_2 Int) (v_max_~ret~0_BEFORE_RETURN_2 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647) (not (< main_~i~1 60)) (= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) |main_#t~ret6|)) (and (not (<= (mod v_prenex_2 4294967296) 2147483647)) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60))))) (exists ((v_max_~ret~0_BEFORE_RETURN_1 Int) (v_prenex_1 Int)) (or (and (= (+ (mod v_prenex_1 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_prenex_1 4294967296) 2147483647))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647) (not (< main_~i~1 60)) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296)))))) [2019-10-13 23:20:22,586 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 368#true [2019-10-13 23:20:22,586 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 645#(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 23:20:22,586 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:22,586 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 301#true [2019-10-13 23:20:22,586 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 589#true [2019-10-13 23:20:22,587 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 575#true [2019-10-13 23:20:22,587 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 548#true [2019-10-13 23:20:22,587 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:22,587 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 580#(exists ((v_prenex_2 Int) (v_max_~ret~0_BEFORE_RETURN_1 Int) (v_max_~ret~0_BEFORE_RETURN_2 Int) (v_prenex_1 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_2 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))) (= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) main_~ret~1) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_prenex_2 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))) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) main_~ret~1) (<= 0 (+ main_~ret~1 2147483648))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_1 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 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_1 4294967296) (- 4294967296))) (not (<= (mod v_prenex_1 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:22,588 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 222#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_max_~ret~0_BEFORE_RETURN_5 Int) (v_max_~ret~0_BEFORE_RETURN_6 Int)) (or (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296)) (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~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_max_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_max_~ret~0_BEFORE_RETURN_5 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_prenex_29 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_29 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))))))) (and (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_max_~ret~0_BEFORE_RETURN_5 Int) (v_max_~ret~0_BEFORE_RETURN_6 Int)) (or (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296)) (not (< main_~i~2 59)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~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_max_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_max_~ret~0_BEFORE_RETURN_5 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_prenex_29 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_29 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)))) [2019-10-13 23:20:22,588 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:22,969 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:22,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:22,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381949478] [2019-10-13 23:20:22,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:22,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:22,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:22,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:22,973 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 18 states. [2019-10-13 23:20:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:23,724 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-13 23:20:23,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:23,724 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2019-10-13 23:20:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:23,725 INFO L225 Difference]: With dead ends: 40 [2019-10-13 23:20:23,725 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 23:20:23,726 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 23:20:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 23:20:23,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 23:20:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 23:20:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 23:20:23,733 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2019-10-13 23:20:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:23,733 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 23:20:23,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 23:20:23,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 23:20:23,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:23,735 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 23:20:23,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:23,939 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:23,940 INFO L82 PathProgramCache]: Analyzing trace with hash -493974743, now seen corresponding path program 2 times [2019-10-13 23:20:23,940 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:23,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035196433] [2019-10-13 23:20:23,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:23,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:23,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:24,038 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 23:20:24,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035196433] [2019-10-13 23:20:24,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359174003] [2019-10-13 23:20:24,043 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 23:20:24,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 23:20:24,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:24,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:24,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:24,164 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 23:20:24,164 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:24,192 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 23:20:24,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [772494674] [2019-10-13 23:20:24,194 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:24,195 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:24,195 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:24,195 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:24,196 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:24,224 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:25,864 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:25,899 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:25,913 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:25,913 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:25,914 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:25,914 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 60)) (<= 60 max_~i~0) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:25,914 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:25,918 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(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 23:20:25,918 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:25,919 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 23:20:25,919 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 23:20:25,919 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_195 Int) (v_max_~ret~0_BEFORE_RETURN_27 Int)) (or (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (not (< main_~i~1 60)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) |main_#t~ret6|)) (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_max_~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 (<= (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647) (not (< main_~i~1 60)) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296)))))) [2019-10-13 23:20:25,919 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:25,920 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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 23:20:25,920 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:25,920 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:25,920 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:25,920 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:25,920 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:25,921 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:25,921 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_196 Int) (v_prenex_195 Int) (v_max_~ret~0_BEFORE_RETURN_28 Int) (v_max_~ret~0_BEFORE_RETURN_27 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 (<= main_~ret~1 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (not (< main_~i~1 60)) (= (+ (mod v_max_~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 (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296)) (<= main_~ret~1 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296) 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))))) [2019-10-13 23:20:25,922 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_224 Int) (v_max_~ret~0_BEFORE_RETURN_32 Int) (v_max_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_223 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296)) main_~ret5~0) (<= 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) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_223 4294967296) 2147483647) (= (mod v_prenex_223 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)) (<= 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_max_~ret~0_BEFORE_RETURN_31 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_31 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 (exists ((v_prenex_224 Int) (v_max_~ret~0_BEFORE_RETURN_32 Int) (v_max_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_223 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296)) main_~ret5~0) (<= 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) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_223 4294967296) 2147483647) (= (mod v_prenex_223 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)) (<= 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_max_~ret~0_BEFORE_RETURN_31 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_31 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)))))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:25,922 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:26,301 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:26,301 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4, 11] total 21 [2019-10-13 23:20:26,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013935151] [2019-10-13 23:20:26,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 23:20:26,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:26,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 23:20:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:20:26,305 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 22 states. [2019-10-13 23:20:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:27,206 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-10-13 23:20:27,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 23:20:27,206 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 32 [2019-10-13 23:20:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:27,207 INFO L225 Difference]: With dead ends: 44 [2019-10-13 23:20:27,207 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 23:20:27,209 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 23:20:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 23:20:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-13 23:20:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 23:20:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-13 23:20:27,215 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2019-10-13 23:20:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:27,215 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-13 23:20:27,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 23:20:27,216 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-13 23:20:27,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:20:27,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:27,217 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 23:20:27,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:27,419 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:27,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:27,420 INFO L82 PathProgramCache]: Analyzing trace with hash 132820922, now seen corresponding path program 3 times [2019-10-13 23:20:27,420 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:27,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953164333] [2019-10-13 23:20:27,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:27,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:27,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:27,547 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 23:20:27,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953164333] [2019-10-13 23:20:27,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017237568] [2019-10-13 23:20:27,548 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 23:20:27,671 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:20:27,671 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:27,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 23:20:27,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:27,699 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 23:20:27,699 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:27,784 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 23:20:27,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [675628502] [2019-10-13 23:20:27,786 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:27,786 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:27,787 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:27,788 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:27,788 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:27,808 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:29,121 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:29,150 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:29,153 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:29,154 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:29,154 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:29,154 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 60)) (<= 60 max_~i~0) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:29,155 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:29,155 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(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 23:20:29,155 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:29,155 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 23:20:29,156 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 23:20:29,156 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_389 Int) (v_max_~ret~0_BEFORE_RETURN_53 Int)) (or (and (= (+ (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647))) (and (not (< main_~i~1 60)) (<= (mod v_prenex_389 4294967296) 2147483647) (= |main_#t~ret6| (mod v_prenex_389 4294967296))))) (exists ((v_max_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_prenex_390 4294967296) 2147483647))) (and (not (< main_~i~1 60)) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296)) (<= (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647))))) [2019-10-13 23:20:29,156 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:29,157 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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 23:20:29,157 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:29,157 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:29,157 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:29,158 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:29,158 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:29,158 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:29,159 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(or (exists ((v_prenex_389 Int) (v_max_~ret~0_BEFORE_RETURN_54 Int) (v_max_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_390 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))) (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_53 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))) (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296)) (<= (mod v_max_~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))))) (exists ((v_prenex_389 Int) (v_max_~ret~0_BEFORE_RETURN_54 Int) (v_max_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_390 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))) (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_53 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))) (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296)) (<= (mod v_max_~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)))))) [2019-10-13 23:20:29,159 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_max_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int) (v_max_~ret~0_BEFORE_RETURN_58 Int)) (or (and (not (< main_~i~2 59)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) 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_418 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_418 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647) (not (< main_~i~2 59)) (= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) main_~ret5~0) (<= 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_417 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_417 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236))))))) (and (exists ((v_max_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int) (v_max_~ret~0_BEFORE_RETURN_58 Int)) (or (and (not (< main_~i~2 59)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) 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_418 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_418 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647) (not (< main_~i~2 59)) (= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) main_~ret5~0) (<= 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_417 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_417 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 23:20:29,160 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:29,660 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:29,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 25 [2019-10-13 23:20:29,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300278151] [2019-10-13 23:20:29,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 23:20:29,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:29,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 23:20:29,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-10-13 23:20:29,668 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 26 states. [2019-10-13 23:20:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:30,968 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-10-13 23:20:30,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:20:30,968 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2019-10-13 23:20:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:30,969 INFO L225 Difference]: With dead ends: 54 [2019-10-13 23:20:30,969 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 23:20:30,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=1701, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 23:20:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 23:20:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 23:20:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 23:20:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-13 23:20:30,978 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 42 [2019-10-13 23:20:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:30,979 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-13 23:20:30,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 23:20:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-13 23:20:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 23:20:30,980 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:30,981 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 23:20:31,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:31,184 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:31,185 INFO L82 PathProgramCache]: Analyzing trace with hash 944007491, now seen corresponding path program 4 times [2019-10-13 23:20:31,185 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:31,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474697414] [2019-10-13 23:20:31,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:31,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:31,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:31,336 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 23:20:31,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474697414] [2019-10-13 23:20:31,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285044002] [2019-10-13 23:20:31,337 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 23:20:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:31,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 23:20:31,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:31,486 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 23:20:31,486 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:31,745 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 23:20:31,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1524877439] [2019-10-13 23:20:31,747 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:31,747 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:31,748 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:31,748 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:31,748 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:31,775 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:32,930 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:32,959 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:32,961 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:32,962 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:32,962 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:32,962 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 60)) (<= 60 max_~i~0) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:32,962 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:32,962 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(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 23:20:32,963 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:32,963 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 23:20:32,963 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 23:20:32,963 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_584 Int) (v_max_~ret~0_BEFORE_RETURN_80 Int)) (or (and (not (< main_~i~1 60)) (<= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) |main_#t~ret6|)) (and (= (+ (mod v_prenex_584 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_prenex_584 4294967296) 2147483647))))) (exists ((v_max_~ret~0_BEFORE_RETURN_79 Int) (v_prenex_583 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) |main_#t~ret6|) (not (< main_~i~1 60))) (and (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_prenex_583 4294967296) 2147483647)))))) [2019-10-13 23:20:32,963 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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 23:20:32,964 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:32,964 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:32,964 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:32,964 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:32,964 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:32,964 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:32,965 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:32,965 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_max_~ret~0_BEFORE_RETURN_79 Int) (v_prenex_583 Int) (v_prenex_584 Int) (v_max_~ret~0_BEFORE_RETURN_80 Int)) (or (and (= (mod v_max_~ret~0_BEFORE_RETURN_80 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))) (<= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (not (< main_~i~1 60)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) main_~ret~1) (<= 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))) (not (<= (mod v_prenex_584 4294967296) 2147483647)) (= main_~ret~1 (+ (mod v_prenex_584 4294967296) (- 4294967296))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:32,965 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_max_~ret~0_BEFORE_RETURN_84 Int) (v_max_~ret~0_BEFORE_RETURN_83 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) (- 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_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) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296)) (= 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_max_~ret~0_BEFORE_RETURN_84 Int) (v_max_~ret~0_BEFORE_RETURN_83 Int)) (or (and (not (< main_~i~2 59)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) (- 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_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) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))))) [2019-10-13 23:20:32,965 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:33,338 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:33,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 11] total 39 [2019-10-13 23:20:33,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145692823] [2019-10-13 23:20:33,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-13 23:20:33,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:33,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-13 23:20:33,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 23:20:33,342 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 40 states. [2019-10-13 23:20:34,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:34,771 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2019-10-13 23:20:34,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-10-13 23:20:34,771 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 49 [2019-10-13 23:20:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:34,772 INFO L225 Difference]: With dead ends: 68 [2019-10-13 23:20:34,772 INFO L226 Difference]: Without dead ends: 50 [2019-10-13 23:20:34,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1244, Invalid=4158, Unknown=0, NotChecked=0, Total=5402 [2019-10-13 23:20:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-13 23:20:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-10-13 23:20:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-13 23:20:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-10-13 23:20:34,783 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 49 [2019-10-13 23:20:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:34,783 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-10-13 23:20:34,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-13 23:20:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-10-13 23:20:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-13 23:20:34,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:34,785 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 23:20:34,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:34,989 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:34,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:34,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1182307997, now seen corresponding path program 5 times [2019-10-13 23:20:34,990 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:34,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247698557] [2019-10-13 23:20:34,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:34,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:34,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:35,440 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 23:20:35,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247698557] [2019-10-13 23:20:35,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887541388] [2019-10-13 23:20:35,441 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 23:20:35,604 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 23:20:35,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:35,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:35,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:35,645 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 23:20:35,646 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:35,713 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 23:20:35,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443355415] [2019-10-13 23:20:35,716 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:35,716 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:35,717 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:35,717 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:35,718 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:35,737 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:36,933 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:36,967 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:36,969 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:36,970 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:36,970 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 640#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:36,970 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 636#(and (not (< max_~i~0 60)) (<= 60 max_~i~0) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:36,970 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:36,970 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(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 23:20:36,971 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 631#(<= 0 max_~i~0) [2019-10-13 23:20:36,971 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 23:20:36,971 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 23:20:36,971 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_max_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_106 4294967296) 2147483647)) (not (< main_~i~1 60)) (= |main_#t~ret6| (+ (mod v_max_~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_max_~ret~0_BEFORE_RETURN_105 Int) (v_prenex_777 Int)) (or (and (not (< main_~i~1 60)) (<= (mod v_max_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_105 4294967296) |main_#t~ret6|)) (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (= |main_#t~ret6| (+ (mod v_prenex_777 4294967296) (- 4294967296))) (not (< main_~i~1 60)))))) [2019-10-13 23:20:36,971 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 645#(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 23:20:36,972 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:36,972 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:36,972 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:36,972 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:36,972 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:36,973 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:36,973 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:36,973 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_max_~ret~0_BEFORE_RETURN_105 Int) (v_prenex_777 Int) (v_max_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_106 4294967296) (- 4294967296))) (not (<= (mod v_max_~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))) (<= 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_max_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_105 4294967296) main_~ret~1) (<= 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 23:20:36,973 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (exists ((v_max_~ret~0_BEFORE_RETURN_109 Int) (v_prenex_806 Int) (v_max_~ret~0_BEFORE_RETURN_110 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_max_~ret~0_BEFORE_RETURN_109 4294967296) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (< main_~i~2 59)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_110 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_prenex_805 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_805 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_max_~ret~0_BEFORE_RETURN_109 Int) (v_prenex_806 Int) (v_max_~ret~0_BEFORE_RETURN_110 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_max_~ret~0_BEFORE_RETURN_109 4294967296) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))) (and (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (< main_~i~2 59)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_110 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_prenex_805 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_805 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))))) [2019-10-13 23:20:36,974 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:37,495 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:37,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 4, 4, 11] total 43 [2019-10-13 23:20:37,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135031181] [2019-10-13 23:20:37,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-13 23:20:37,497 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:37,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-13 23:20:37,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=1443, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 23:20:37,499 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 44 states. [2019-10-13 23:20:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:39,397 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-10-13 23:20:39,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 23:20:39,398 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 63 [2019-10-13 23:20:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:39,399 INFO L225 Difference]: With dead ends: 72 [2019-10-13 23:20:39,399 INFO L226 Difference]: Without dead ends: 54 [2019-10-13 23:20:39,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1349, Invalid=5457, Unknown=0, NotChecked=0, Total=6806 [2019-10-13 23:20:39,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-13 23:20:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-10-13 23:20:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-13 23:20:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-10-13 23:20:39,408 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 63 [2019-10-13 23:20:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:39,409 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-10-13 23:20:39,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-10-13 23:20:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-10-13 23:20:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-13 23:20:39,410 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:39,410 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 23:20:39,615 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:39,615 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2129164918, now seen corresponding path program 6 times [2019-10-13 23:20:39,616 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:39,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232654560] [2019-10-13 23:20:39,617 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:39,617 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:39,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:40,037 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 23:20:40,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232654560] [2019-10-13 23:20:40,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349937528] [2019-10-13 23:20:40,038 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 23:20:40,245 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:20:40,245 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:40,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 23:20:40,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:40,273 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 23:20:40,275 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:41,225 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 23:20:41,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1760259014] [2019-10-13 23:20:41,227 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:41,228 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:41,228 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:41,228 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:41,228 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:41,242 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:42,454 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:42,471 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:42,474 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:42,475 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:42,475 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 640#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:42,475 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 636#(and (not (< max_~i~0 60)) (<= 60 max_~i~0) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:42,476 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:42,476 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(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 23:20:42,476 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 631#(<= 0 max_~i~0) [2019-10-13 23:20:42,476 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 23:20:42,477 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 23:20:42,477 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_972 Int) (v_max_~ret~0_BEFORE_RETURN_132 Int)) (or (and (not (<= (mod v_prenex_972 4294967296) 2147483647)) (not (< main_~i~1 60)) (= (+ (mod v_prenex_972 4294967296) (- 4294967296)) |main_#t~ret6|)) (and (not (< main_~i~1 60)) (<= (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296))))) (exists ((v_prenex_971 Int) (v_max_~ret~0_BEFORE_RETURN_131 Int)) (or (and (= (+ (mod v_max_~ret~0_BEFORE_RETURN_131 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647))) (and (<= (mod v_prenex_971 4294967296) 2147483647) (= (mod v_prenex_971 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)))))) [2019-10-13 23:20:42,477 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 645#(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 23:20:42,478 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:42,478 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:42,478 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:42,478 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:42,479 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:42,479 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:42,479 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:42,479 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_972 Int) (v_prenex_971 Int) (v_max_~ret~0_BEFORE_RETURN_131 Int) (v_max_~ret~0_BEFORE_RETURN_132 Int)) (or (and (<= (mod v_prenex_971 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_prenex_971 4294967296)) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_prenex_972 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (= main_~ret~1 (+ (mod v_prenex_972 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 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_max_~ret~0_BEFORE_RETURN_131 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296)) (<= main_~ret~1 2147483647) (not (< main_~i~1 60)) (<= (mod v_max_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:42,480 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (exists ((v_prenex_1000 Int) (v_max_~ret~0_BEFORE_RETURN_135 Int) (v_prenex_999 Int) (v_max_~ret~0_BEFORE_RETURN_136 Int)) (or (and (not (< main_~i~2 59)) (= (mod v_prenex_999 4294967296) main_~ret5~0) (<= (mod v_prenex_999 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_max_~ret~0_BEFORE_RETURN_136 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_136 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_max_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_135 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 (+ (mod v_prenex_1000 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_1000 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_prenex_1000 Int) (v_max_~ret~0_BEFORE_RETURN_135 Int) (v_prenex_999 Int) (v_max_~ret~0_BEFORE_RETURN_136 Int)) (or (and (not (< main_~i~2 59)) (= (mod v_prenex_999 4294967296) main_~ret5~0) (<= (mod v_prenex_999 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_max_~ret~0_BEFORE_RETURN_136 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_136 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_max_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_135 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 (+ (mod v_prenex_1000 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_1000 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236)))))))) [2019-10-13 23:20:42,480 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:43,020 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:43,020 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30, 11] total 69 [2019-10-13 23:20:43,020 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333588752] [2019-10-13 23:20:43,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 23:20:43,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 23:20:43,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1740, Invalid=3090, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 23:20:43,024 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 70 states. [2019-10-13 23:20:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:48,425 INFO L93 Difference]: Finished difference Result 104 states and 140 transitions. [2019-10-13 23:20:48,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-10-13 23:20:48,425 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 67 [2019-10-13 23:20:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:48,426 INFO L225 Difference]: With dead ends: 104 [2019-10-13 23:20:48,426 INFO L226 Difference]: Without dead ends: 83 [2019-10-13 23:20:48,430 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3929 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5099, Invalid=12723, Unknown=0, NotChecked=0, Total=17822 [2019-10-13 23:20:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-13 23:20:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-13 23:20:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-13 23:20:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-10-13 23:20:48,439 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 67 [2019-10-13 23:20:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:48,440 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2019-10-13 23:20:48,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 23:20:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2019-10-13 23:20:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 23:20:48,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:48,442 INFO L380 BasicCegarLoop]: trace histogram [56, 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 23:20:48,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:48,647 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash -332421779, now seen corresponding path program 7 times [2019-10-13 23:20:48,648 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:48,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857166367] [2019-10-13 23:20:48,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:48,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:48,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 23:20:50,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857166367] [2019-10-13 23:20:50,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347733089] [2019-10-13 23:20:50,014 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:50,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 58 conjunts are in the unsatisfiable core [2019-10-13 23:20:50,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 23:20:50,311 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 23:20:51,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691293718] [2019-10-13 23:20:51,664 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:51,664 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:51,664 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:51,665 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:51,665 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:51,678 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:52,878 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:52,900 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:52,902 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:52,902 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:52,902 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:52,902 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 60)) (<= 60 max_~i~0) (<= 0 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:52,903 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:52,903 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(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 23:20:52,903 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:52,903 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 23:20:52,904 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 23:20:52,904 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_1165 Int) (v_max_~ret~0_BEFORE_RETURN_157 Int)) (or (and (<= (mod v_prenex_1165 4294967296) 2147483647) (= |main_#t~ret6| (mod v_prenex_1165 4294967296)) (not (< main_~i~1 60))) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_157 4294967296) 2147483647)) (= |main_#t~ret6| (+ (mod v_max_~ret~0_BEFORE_RETURN_157 4294967296) (- 4294967296))) (not (< main_~i~1 60))))) (exists ((v_prenex_1166 Int) (v_max_~ret~0_BEFORE_RETURN_158 Int)) (or (and (= (+ (mod v_max_~ret~0_BEFORE_RETURN_158 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 60)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_158 4294967296) 2147483647))) (and (<= (mod v_prenex_1166 4294967296) 2147483647) (= (mod v_prenex_1166 4294967296) |main_#t~ret6|) (not (< main_~i~1 60)))))) [2019-10-13 23:20:52,904 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:52,905 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(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 23:20:52,905 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:52,905 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:52,905 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:52,905 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:52,906 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:52,906 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (<= 60 main_~i~1) (not (< main_~i~1 60))) [2019-10-13 23:20:52,906 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_1166 Int) (v_prenex_1165 Int) (v_max_~ret~0_BEFORE_RETURN_157 Int) (v_max_~ret~0_BEFORE_RETURN_158 Int)) (or (and (<= (mod v_prenex_1165 4294967296) 2147483647) (= main_~ret~1 (mod v_prenex_1165 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))) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_157 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_max_~ret~0_BEFORE_RETURN_157 4294967296) (- 4294967296))) (<= 0 (+ main_~ret~1 2147483648))) (and (= main_~ret~1 (mod v_prenex_1166 4294967296)) (<= (mod v_prenex_1166 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 (<= 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_max_~ret~0_BEFORE_RETURN_158 4294967296) 2147483647)) (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_158 4294967296) (- 4294967296))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:52,906 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_max_~ret~0_BEFORE_RETURN_161 Int) (v_max_~ret~0_BEFORE_RETURN_162 Int) (v_prenex_1194 Int) (v_prenex_1193 Int)) (or (and (not (< main_~i~2 59)) (= (mod v_max_~ret~0_BEFORE_RETURN_161 4294967296) main_~ret5~0) (<= (mod v_max_~ret~0_BEFORE_RETURN_161 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_max_~ret~0_BEFORE_RETURN_162 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_162 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_1194 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_prenex_1194 4294967296)) (<= 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)) (not (<= (mod v_prenex_1193 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_prenex_1193 4294967296) (- 4294967296)) main_~ret5~0) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 236))))))) (and (exists ((v_max_~ret~0_BEFORE_RETURN_161 Int) (v_max_~ret~0_BEFORE_RETURN_162 Int) (v_prenex_1194 Int) (v_prenex_1193 Int)) (or (and (not (< main_~i~2 59)) (= (mod v_max_~ret~0_BEFORE_RETURN_161 4294967296) main_~ret5~0) (<= (mod v_max_~ret~0_BEFORE_RETURN_161 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_max_~ret~0_BEFORE_RETURN_162 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_162 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_1194 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_prenex_1194 4294967296)) (<= 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)) (not (<= (mod v_prenex_1193 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_prenex_1193 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 23:20:52,906 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:53,551 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:53,551 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59, 11] total 73 [2019-10-13 23:20:53,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820553864] [2019-10-13 23:20:53,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 74 states [2019-10-13 23:20:53,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2019-10-13 23:20:53,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1982, Invalid=3420, Unknown=0, NotChecked=0, Total=5402 [2019-10-13 23:20:53,556 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 74 states.