java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-tiling/pnr3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:38:57,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:38:57,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:38:57,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:38:57,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:38:57,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:38:57,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:38:57,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:38:57,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:38:57,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:38:57,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:38:57,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:38:57,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:38:57,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:38:57,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:38:57,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:38:57,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:38:57,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:38:57,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:38:57,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:38:57,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:38:57,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:38:57,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:38:57,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:38:57,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:38:57,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:38:57,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:38:57,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:38:57,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:38:57,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:38:57,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:38:57,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:38:57,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:38:57,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:38:57,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:38:57,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:38:57,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:38:57,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:38:57,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:38:57,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:38:57,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:38:57,892 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 21:38:57,912 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:38:57,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:38:57,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:38:57,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:38:57,916 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:38:57,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:38:57,917 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:38:57,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:38:57,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:38:57,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:38:57,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:38:57,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:38:57,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:38:57,918 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:38:57,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:38:57,919 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:38:57,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:38:57,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:38:57,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:38:57,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:38:57,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:38:57,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:38:57,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:38:57,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:38:57,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:38:57,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:38:57,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:38:57,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:38:57,921 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 21:38:58,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:38:58,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:38:58,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:38:58,223 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:38:58,223 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:38:58,224 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pnr3.c [2019-10-13 21:38:58,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8bba64b2/b477f5493aaa471ca82110cb1978bd27/FLAG25fd37d3b [2019-10-13 21:38:58,760 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:38:58,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pnr3.c [2019-10-13 21:38:58,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8bba64b2/b477f5493aaa471ca82110cb1978bd27/FLAG25fd37d3b [2019-10-13 21:38:59,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8bba64b2/b477f5493aaa471ca82110cb1978bd27 [2019-10-13 21:38:59,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:38:59,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:38:59,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:59,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:38:59,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:38:59,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6f7d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59, skipping insertion in model container [2019-10-13 21:38:59,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,177 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:38:59,199 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:38:59,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:59,488 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:38:59,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:59,545 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:38:59,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59 WrapperNode [2019-10-13 21:38:59,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:59,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:38:59,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:38:59,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:38:59,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (1/1) ... [2019-10-13 21:38:59,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:38:59,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:38:59,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:38:59,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:38:59,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (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 21:38:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:38:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:38:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:38:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2019-10-13 21:38:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:38:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:38:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:38:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:38:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:38:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:38:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2019-10-13 21:38:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:38:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:38:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:38:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:38:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:38:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:38:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:39:00,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:39:00,197 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:39:00,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:00 BoogieIcfgContainer [2019-10-13 21:39:00,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:39:00,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:39:00,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:39:00,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:39:00,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:59" (1/3) ... [2019-10-13 21:39:00,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a1a1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:00, skipping insertion in model container [2019-10-13 21:39:00,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:59" (2/3) ... [2019-10-13 21:39:00,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a1a1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:00, skipping insertion in model container [2019-10-13 21:39:00,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:00" (3/3) ... [2019-10-13 21:39:00,208 INFO L109 eAbstractionObserver]: Analyzing ICFG pnr3.c [2019-10-13 21:39:00,216 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:39:00,227 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:39:00,240 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:39:00,269 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:39:00,269 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:39:00,269 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:39:00,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:39:00,270 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:39:00,270 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:39:00,270 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:39:00,270 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:39:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-10-13 21:39:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:39:00,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:00,297 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:00,299 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:00,304 INFO L82 PathProgramCache]: Analyzing trace with hash 557815037, now seen corresponding path program 1 times [2019-10-13 21:39:00,311 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:00,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797838376] [2019-10-13 21:39:00,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:00,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:00,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:00,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797838376] [2019-10-13 21:39:00,685 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:39:00,686 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:39:00,687 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085533520] [2019-10-13 21:39:00,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:39:00,693 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:39:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:39:00,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:39:00,711 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-10-13 21:39:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:39:00,870 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2019-10-13 21:39:00,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:39:00,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 21:39:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:39:00,882 INFO L225 Difference]: With dead ends: 56 [2019-10-13 21:39:00,882 INFO L226 Difference]: Without dead ends: 32 [2019-10-13 21:39:00,886 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:39:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-13 21:39:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2019-10-13 21:39:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:39:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-13 21:39:00,930 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2019-10-13 21:39:00,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:39:00,930 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-13 21:39:00,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:39:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-13 21:39:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 21:39:00,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:00,933 INFO L380 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:00,933 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:00,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:00,934 INFO L82 PathProgramCache]: Analyzing trace with hash 886321416, now seen corresponding path program 1 times [2019-10-13 21:39:00,934 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:00,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347127641] [2019-10-13 21:39:00,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:00,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:00,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:01,548 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 26 [2019-10-13 21:39:01,739 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2019-10-13 21:39:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:39:01,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347127641] [2019-10-13 21:39:01,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523202415] [2019-10-13 21:39:01,956 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 21:39:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:02,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-13 21:39:02,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:39:02,240 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-10-13 21:39:02,241 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,282 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:02,289 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2019-10-13 21:39:02,290 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:02,323 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:02,324 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:46 [2019-10-13 21:39:02,415 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:02,440 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,456 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2019-10-13 21:39:02,457 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,470 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,481 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2019-10-13 21:39:02,482 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,538 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:02,540 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:02,540 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:83, output treesize:72 [2019-10-13 21:39:02,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:02,630 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,632 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,633 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,646 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2019-10-13 21:39:02,647 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,653 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,656 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:02,662 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-10-13 21:39:02,663 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,694 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:02,696 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:02,696 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:78, output treesize:64 [2019-10-13 21:39:02,817 INFO L341 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2019-10-13 21:39:02,817 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 16 [2019-10-13 21:39:02,818 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,822 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:02,823 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:39:02,823 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:8 [2019-10-13 21:39:02,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:39:02,893 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:39:02,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:02,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:03,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:03,060 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2019-10-13 21:39:03,076 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-10-13 21:39:03,077 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-13 21:39:03,091 INFO L567 ElimStorePlain]: treesize reduction 15, result has 44.4 percent of original size [2019-10-13 21:39:03,092 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:39:03,100 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:03,105 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2019-10-13 21:39:03,122 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-10-13 21:39:03,123 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2019-10-13 21:39:03,139 INFO L567 ElimStorePlain]: treesize reduction 10, result has 56.5 percent of original size [2019-10-13 21:39:03,140 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:03,150 INFO L567 ElimStorePlain]: treesize reduction 12, result has 52.0 percent of original size [2019-10-13 21:39:03,151 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-13 21:39:03,152 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:37, output treesize:13 [2019-10-13 21:39:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:39:03,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1115907341] [2019-10-13 21:39:03,261 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-13 21:39:03,262 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:39:03,271 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:39:03,281 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:39:03,282 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:39:03,474 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 30 for LOIs [2019-10-13 21:39:03,745 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:03,869 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,156 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 21:39:18,164 INFO L199 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 58 for LOIs [2019-10-13 21:39:18,170 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 16 for LOIs [2019-10-13 21:39:18,175 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:39:18,176 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:39:18,176 INFO L193 IcfgInterpreter]: Reachable states at location L43 satisfy 2052#(and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= 1 main_~i~0) (<= 0 (+ main_~value~0 2147483648)) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |main_#t~ret6| 2147483647) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |old(~SIZE~0)|) (<= |#NULL.offset| 0) (<= main_~value~0 2147483647) (<= |old(~SIZE~0)| 0) (<= main_~FIXEDVAL~0 10) (= main_~FIXEDVAL~0 10) (<= 0 (+ |main_#t~ret6| 2147483648)) (= |#NULL.offset| 0) (<= 0 main_~DEFAULTVAL~0) (= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,176 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 2169#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:39:18,176 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 1240#(and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= 1 main_~i~0) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |old(~SIZE~0)|) (<= |#NULL.offset| 0) (<= |old(~SIZE~0)| 0) (<= main_~FIXEDVAL~0 10) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (<= 0 main_~DEFAULTVAL~0) (= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,177 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 2187#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= ~MAX~0 |old(~MAX~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~SIZE~0)| ~SIZE~0)) [2019-10-13 21:39:18,177 INFO L193 IcfgInterpreter]: Reachable states at location L66 satisfy 921#(and (< main_~i~0 ~SIZE~0) (= (select (select |#memory_int| main_~a~0.base) (+ (* main_~i~0 4) main_~a~0.offset)) |main_#t~mem9|)) [2019-10-13 21:39:18,177 INFO L193 IcfgInterpreter]: Reachable states at location ReadFromPortEXIT satisfy 2183#(exists ((v_main_~a~0.base_BEFORE_CALL_96 Int) (v_main_~i~0_BEFORE_CALL_127 Int) (v_main_~a~0.offset_BEFORE_CALL_127 Int) (v_prenex_617 Int) (v_prenex_618 Int) (v_prenex_616 Int)) (or (and (<= ReadFromPort_~x~0 2147483647) (<= ~MAX~0 100000) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (= |ReadFromPort_#res| ReadFromPort_~x~0) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ ReadFromPort_~x~0 2147483648)) (<= 100000 ~MAX~0)) (and (<= ReadFromPort_~x~0 2147483647) (<= ~MAX~0 100000) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= 0 (+ (select (select |#memory_int| v_main_~a~0.base_BEFORE_CALL_96) (+ (* v_main_~i~0_BEFORE_CALL_127 12) v_main_~a~0.offset_BEFORE_CALL_127 (- 8))) 2147483648)) (= |ReadFromPort_#res| ReadFromPort_~x~0) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= 0 v_main_~a~0.offset_BEFORE_CALL_127) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (not (= (select (select |#memory_int| v_main_~a~0.base_BEFORE_CALL_96) (+ (* v_main_~i~0_BEFORE_CALL_127 12) v_main_~a~0.offset_BEFORE_CALL_127 (- 8))) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= v_main_~a~0.offset_BEFORE_CALL_127 0) (<= (select (select |#memory_int| v_main_~a~0.base_BEFORE_CALL_96) (+ (* v_main_~i~0_BEFORE_CALL_127 12) v_main_~a~0.offset_BEFORE_CALL_127 (- 8))) 2147483647) (<= 1 v_main_~i~0_BEFORE_CALL_127) (= |#NULL.offset| 0) (<= 0 (+ ReadFromPort_~x~0 2147483648)) (<= 100000 ~MAX~0)) (and (<= ReadFromPort_~x~0 2147483647) (<= ~MAX~0 100000) (= |#NULL.base| 0) (<= 0 v_prenex_618) (<= ~SIZE~0 100000) (= |ReadFromPort_#res| ReadFromPort_~x~0) (<= (select (select |#memory_int| v_prenex_616) (+ (* v_prenex_617 12) v_prenex_618 (- 8))) 10) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= v_prenex_618 0) (<= 1 v_prenex_617) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (<= 10 (select (select |#memory_int| v_prenex_616) (+ (* v_prenex_617 12) v_prenex_618 (- 8)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_616) (+ (* v_prenex_617 12) v_prenex_618 (- 8))) 10) (<= 0 (+ ReadFromPort_~x~0 2147483648)) (= |#NULL.offset| 0) (<= 100000 ~MAX~0)))) [2019-10-13 21:39:18,177 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 2164#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 21:39:18,177 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (<= ~MAX~0 100000) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= ~SIZE~0 0) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |#valid| 0)) (<= 0 ~SIZE~0) (= |#NULL.offset| 0) (<= ~SIZE~0 0) (<= 100000 ~MAX~0)) [2019-10-13 21:39:18,178 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= ~MAX~0 100000) (= |old(~SIZE~0)| 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~SIZE~0)|) (= |#valid| |old(#valid)|) (<= |old(~SIZE~0)| 0) (<= 0 ~SIZE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= ~SIZE~0 0) (= |old(~SIZE~0)| ~SIZE~0) (<= 100000 ~MAX~0)) [2019-10-13 21:39:18,178 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 2192#(and (<= ~MAX~0 100000) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= ~SIZE~0 0) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |#valid| (store |old(#valid)| 0 0)) (<= 0 ~SIZE~0) (= |#NULL.offset| 0) (<= ~SIZE~0 0) (<= 100000 ~MAX~0)) [2019-10-13 21:39:18,179 INFO L193 IcfgInterpreter]: Reachable states at location L31-3 satisfy 1519#(and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= 1 main_~i~0) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |old(~SIZE~0)|) (<= |#NULL.offset| 0) (<= |old(~SIZE~0)| 0) (<= main_~FIXEDVAL~0 10) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (<= 0 main_~DEFAULTVAL~0) (= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,179 INFO L193 IcfgInterpreter]: Reachable states at location ReadFromPortENTRY satisfy 2178#(or (and (<= ~MAX~0 100000) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 100000 ~MAX~0)) (exists ((v_main_~a~0.base_BEFORE_CALL_96 Int) (v_main_~i~0_BEFORE_CALL_127 Int) (v_main_~a~0.offset_BEFORE_CALL_127 Int) (v_prenex_617 Int) (v_prenex_618 Int) (v_prenex_616 Int)) (or (and (<= ~MAX~0 100000) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= 0 v_prenex_618) (<= (select (select |#memory_int| v_prenex_616) (+ (* v_prenex_617 12) v_prenex_618 (- 8))) 10) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= v_prenex_618 0) (<= 0 |#NULL.base|) (<= 1 v_prenex_617) (= ~MAX~0 100000) (<= 10 (select (select |#memory_int| v_prenex_616) (+ (* v_prenex_617 12) v_prenex_618 (- 8)))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (select (select |#memory_int| v_prenex_616) (+ (* v_prenex_617 12) v_prenex_618 (- 8))) 10) (= |#NULL.offset| 0) (<= 100000 ~MAX~0)) (and (<= ~MAX~0 100000) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= 0 (+ (select (select |#memory_int| v_main_~a~0.base_BEFORE_CALL_96) (+ (* v_main_~i~0_BEFORE_CALL_127 12) v_main_~a~0.offset_BEFORE_CALL_127 (- 8))) 2147483648)) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= 0 v_main_~a~0.offset_BEFORE_CALL_127) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (not (= (select (select |#memory_int| v_main_~a~0.base_BEFORE_CALL_96) (+ (* v_main_~i~0_BEFORE_CALL_127 12) v_main_~a~0.offset_BEFORE_CALL_127 (- 8))) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= v_main_~a~0.offset_BEFORE_CALL_127 0) (<= (select (select |#memory_int| v_main_~a~0.base_BEFORE_CALL_96) (+ (* v_main_~i~0_BEFORE_CALL_127 12) v_main_~a~0.offset_BEFORE_CALL_127 (- 8))) 2147483647) (<= 1 v_main_~i~0_BEFORE_CALL_127) (= |#NULL.offset| 0) (<= 100000 ~MAX~0))))) [2019-10-13 21:39:18,179 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:39:18,179 INFO L193 IcfgInterpreter]: Reachable states at location L28 satisfy 43#(and (<= ~MAX~0 100000) (= |old(~SIZE~0)| 0) (= 0 (select |old(#valid)| |main_#t~malloc3.base|)) (<= |main_#t~malloc3.offset| 0) (= 0 |#NULL.base|) (<= 0 |main_#t~malloc3.offset|) (< 1 ~SIZE~0) (< ~SIZE~0 ~MAX~0) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (< |#StackHeapBarrier| |main_#t~malloc3.base|) (<= ~SIZE~0 2147483647) (not (= |main_#t~malloc3.base| 0)) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0) (<= ~SIZE~0 100000) (<= |#NULL.base| 0) (<= 0 (+ ~SIZE~0 2147483648)) (<= 1 ~SIZE~0) (= main_~a~0.offset |main_#t~malloc3.offset|) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (= |main_#t~malloc3.base| main_~a~0.base) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (<= 0 |old(~SIZE~0)|) (= |#valid| (store |old(#valid)| |main_#t~malloc3.base| 1)) (<= |old(~SIZE~0)| 0) (= |#memory_int| |old(#memory_int)|) (<= main_~FIXEDVAL~0 10) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (<= 0 main_~DEFAULTVAL~0) (= (store |old(#length)| |main_#t~malloc3.base| (* ~SIZE~0 4)) |#length|) (= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,180 INFO L193 IcfgInterpreter]: Reachable states at location L64-3 satisfy 1076#true [2019-10-13 21:39:18,180 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 2159#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 21:39:18,180 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 2174#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:39:18,180 INFO L193 IcfgInterpreter]: Reachable states at location L20 satisfy 38#(and (<= ~MAX~0 100000) (= |old(~SIZE~0)| 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 (+ ~SIZE~0 2147483648)) (<= 0 |#NULL.base|) (= ~MAX~0 100000) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~SIZE~0)|) (<= ~SIZE~0 2147483647) (= |#valid| |old(#valid)|) (<= |old(~SIZE~0)| 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 100000 ~MAX~0)) [2019-10-13 21:39:18,180 INFO L193 IcfgInterpreter]: Reachable states at location L44-2 satisfy 1937#(and (or (and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= main_~value~0 main_~DEFAULTVAL~0) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (= main_~FIXEDVAL~0 (select (select |#memory_int| main_~a~0.base) (+ (* main_~i~0 12) main_~a~0.offset (- 8)))) (<= 0 |#NULL.offset|) (<= 1 main_~i~0) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= main_~value~0 2147483647) (<= 0 |old(~SIZE~0)|) (<= |#NULL.offset| 0) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (= main_~DEFAULTVAL~0 0)) (and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= 1 main_~i~0) (not (= main_~value~0 main_~DEFAULTVAL~0)) (= main_~value~0 (select (select |#memory_int| main_~a~0.base) (+ (* main_~i~0 12) main_~a~0.offset (- 8)))) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= main_~value~0 2147483647) (<= 0 |old(~SIZE~0)|) (<= |#NULL.offset| 0) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (= main_~DEFAULTVAL~0 0))) (<= |old(~SIZE~0)| 0) (<= 0 (+ main_~value~0 2147483648)) (<= main_~FIXEDVAL~0 10) (<= 0 main_~DEFAULTVAL~0) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,181 INFO L193 IcfgInterpreter]: Reachable states at location L53 satisfy 1655#(and (or (and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= |main_#t~ret7| 2147483647) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (not (= main_~value~0 main_~DEFAULTVAL~0)) (= main_~value~0 (select (select |#memory_int| main_~a~0.base) (+ (* main_~i~0 12) main_~a~0.offset (- 8)))) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= 0 (+ |main_#t~ret7| 2147483648)) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (= main_~DEFAULTVAL~0 0)) (and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= |main_#t~ret7| 2147483647) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (= main_~value~0 main_~DEFAULTVAL~0) (= main_~FIXEDVAL~0 (select (select |#memory_int| main_~a~0.base) (+ (* main_~i~0 12) main_~a~0.offset (- 8)))) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= 0 (+ |main_#t~ret7| 2147483648)) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (= main_~DEFAULTVAL~0 0))) (<= 0 |old(~SIZE~0)|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~value~0 2147483647) (<= 1 main_~i~0) (<= |old(~SIZE~0)| 0) (<= 0 (+ main_~value~0 2147483648)) (<= main_~FIXEDVAL~0 10) (<= 0 main_~DEFAULTVAL~0) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,181 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 758#(and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= 0 |main_#t~malloc3.offset|) (<= 0 (+ |main_#t~ret5| 2147483648)) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= 1 main_~i~0) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |main_#t~ret5| 2147483647) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |old(~SIZE~0)|) (<= |#NULL.offset| 0) (<= |old(~SIZE~0)| 0) (<= main_~FIXEDVAL~0 10) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (<= 0 main_~DEFAULTVAL~0) (= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,181 INFO L193 IcfgInterpreter]: Reachable states at location L34-2 satisfy 2155#(and (= |old(~SIZE~0)| 0) (<= |main_#t~malloc3.offset| 0) (<= ~MAX~0 100000) (<= 0 |main_#t~malloc3.offset|) (<= 0 |#NULL.base|) (= |main_#t~malloc3.offset| 0) (= ~MAX~0 100000) (<= 0 |#NULL.offset|) (<= 1 main_~i~0) (<= 0 (+ main_~value~0 2147483648)) (<= 10 main_~FIXEDVAL~0) (<= 100000 ~MAX~0) (<= main_~DEFAULTVAL~0 0) (= |#NULL.base| 0) (<= ~SIZE~0 100000) (<= |#NULL.base| 0) (<= 1 ~SIZE~0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |old(~SIZE~0)|) (<= |#NULL.offset| 0) (<= main_~value~0 2147483647) (<= |old(~SIZE~0)| 0) (<= main_~FIXEDVAL~0 10) (= main_~FIXEDVAL~0 10) (= |#NULL.offset| 0) (<= 0 main_~DEFAULTVAL~0) (= main_~DEFAULTVAL~0 0)) [2019-10-13 21:39:18,760 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-10-13 21:39:19,812 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-10-13 21:39:20,137 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-10-13 21:39:20,320 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:39:20,320 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9, 19] total 41 [2019-10-13 21:39:20,320 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180970260] [2019-10-13 21:39:20,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-10-13 21:39:20,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:39:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-10-13 21:39:20,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:39:20,327 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 41 states. [2019-10-13 21:39:20,694 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2019-10-13 21:39:21,111 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-10-13 21:39:21,462 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-10-13 21:39:21,743 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2019-10-13 21:39:22,104 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-10-13 21:39:22,296 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-10-13 21:39:23,164 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2019-10-13 21:39:23,373 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-10-13 21:39:23,660 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-10-13 21:39:23,981 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-13 21:39:24,681 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-10-13 21:39:25,038 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-10-13 21:39:25,712 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-10-13 21:39:25,976 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-10-13 21:39:26,341 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-10-13 21:39:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:39:26,348 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2019-10-13 21:39:26,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-10-13 21:39:26,349 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 26 [2019-10-13 21:39:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:39:26,353 INFO L225 Difference]: With dead ends: 51 [2019-10-13 21:39:26,353 INFO L226 Difference]: Without dead ends: 49 [2019-10-13 21:39:26,356 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=603, Invalid=4653, Unknown=0, NotChecked=0, Total=5256 [2019-10-13 21:39:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-13 21:39:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2019-10-13 21:39:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 21:39:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-10-13 21:39:26,368 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 26 [2019-10-13 21:39:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:39:26,369 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-10-13 21:39:26,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-10-13 21:39:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-10-13 21:39:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 21:39:26,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:26,370 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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 21:39:26,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:39:26,572 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:26,572 INFO L82 PathProgramCache]: Analyzing trace with hash -767872105, now seen corresponding path program 1 times [2019-10-13 21:39:26,573 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:26,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464716719] [2019-10-13 21:39:26,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:26,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:26,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:39:26,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464716719] [2019-10-13 21:39:26,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106898019] [2019-10-13 21:39:26,929 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 21:39:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:27,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:39:27,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:39:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:39:27,288 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:39:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:39:27,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [677244662] [2019-10-13 21:39:27,444 INFO L162 IcfgInterpreter]: Started Sifa with 25 locations of interest [2019-10-13 21:39:27,444 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:39:27,444 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:39:27,445 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:39:27,445 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:39:27,476 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 30 for LOIs [2019-10-13 21:39:27,814 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:27,880 WARN L225 Elim1Store]: Array PQE input equivalent to false