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/nr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:38:55,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:38:55,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:38:55,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:38:55,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:38:55,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:38:55,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:38:55,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:38:55,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:38:55,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:38:55,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:38:55,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:38:55,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:38:55,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:38:55,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:38:55,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:38:55,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:38:55,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:38:55,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:38:55,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:38:55,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:38:55,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:38:55,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:38:55,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:38:55,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:38:55,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:38:55,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:38:55,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:38:55,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:38:55,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:38:55,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:38:55,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:38:55,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:38:55,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:38:55,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:38:55,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:38:55,089 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 21:38:55,123 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:38:55,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:38:55,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:38:55,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:38:55,125 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:38:55,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:38:55,128 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:38:55,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:38:55,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:38:55,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:38:55,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:38:55,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:38:55,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:38:55,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:38:55,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:38:55,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:38:55,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:38:55,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:38:55,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:38:55,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:38:55,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:38:55,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:38:55,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:38:55,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:38:55,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:38:55,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:38:55,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:38:55,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:38:55,133 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 21:38:55,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:38:55,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:38:55,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:38:55,461 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:38:55,461 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:38:55,462 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr2.c [2019-10-13 21:38:55,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15253313/2ff15d584f6247fda34defab3353c6d6/FLAGd0d0a3bf5 [2019-10-13 21:38:56,007 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:38:56,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/nr2.c [2019-10-13 21:38:56,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15253313/2ff15d584f6247fda34defab3353c6d6/FLAGd0d0a3bf5 [2019-10-13 21:38:56,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15253313/2ff15d584f6247fda34defab3353c6d6 [2019-10-13 21:38:56,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:38:56,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:38:56,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:56,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:38:56,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:38:56,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19511e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56, skipping insertion in model container [2019-10-13 21:38:56,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,400 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:38:56,425 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:38:56,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:56,691 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:38:56,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:56,832 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:38:56,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56 WrapperNode [2019-10-13 21:38:56,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:56,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:38:56,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:38:56,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:38:56,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... [2019-10-13 21:38:56,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:38:56,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:38:56,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:38:56,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:38:56,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:38:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:38:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:38:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:38:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:38:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:38:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:38:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:38:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:38:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:38:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:38:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:38:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:38:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:38:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:38:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:38:57,380 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:38:57,381 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:38:57,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:57 BoogieIcfgContainer [2019-10-13 21:38:57,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:38:57,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:38:57,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:38:57,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:38:57,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:56" (1/3) ... [2019-10-13 21:38:57,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58be19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:57, skipping insertion in model container [2019-10-13 21:38:57,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:56" (2/3) ... [2019-10-13 21:38:57,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58be19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:57, skipping insertion in model container [2019-10-13 21:38:57,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:57" (3/3) ... [2019-10-13 21:38:57,391 INFO L109 eAbstractionObserver]: Analyzing ICFG nr2.c [2019-10-13 21:38:57,402 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:38:57,412 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:38:57,424 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:38:57,451 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:38:57,451 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:38:57,451 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:38:57,451 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:38:57,452 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:38:57,452 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:38:57,452 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:38:57,452 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:38:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 21:38:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:38:57,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:57,476 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:57,477 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1436172912, now seen corresponding path program 1 times [2019-10-13 21:38:57,491 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:57,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655281051] [2019-10-13 21:38:57,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:57,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:57,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:57,730 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 21:38:57,731 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655281051] [2019-10-13 21:38:57,732 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:57,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:38:57,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604586229] [2019-10-13 21:38:57,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:38:57,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:57,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:38:57,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:38:57,755 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-10-13 21:38:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:57,896 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-10-13 21:38:57,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:38:57,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 21:38:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:57,908 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:38:57,908 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 21:38:57,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:38:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 21:38:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-10-13 21:38:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 21:38:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-13 21:38:57,961 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2019-10-13 21:38:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:57,962 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-13 21:38:57,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:38:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-13 21:38:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:38:57,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:57,965 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:57,966 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:57,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:57,966 INFO L82 PathProgramCache]: Analyzing trace with hash -519328614, now seen corresponding path program 1 times [2019-10-13 21:38:57,967 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:57,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956511314] [2019-10-13 21:38:57,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:57,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:57,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:58,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956511314] [2019-10-13 21:38:58,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:58,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:38:58,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340444860] [2019-10-13 21:38:58,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:38:58,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:58,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:38:58,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:38:58,033 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-10-13 21:38:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:58,050 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 21:38:58,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:38:58,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-13 21:38:58,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:58,052 INFO L225 Difference]: With dead ends: 31 [2019-10-13 21:38:58,052 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 21:38:58,053 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 21:38:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 21:38:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 21:38:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 21:38:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-13 21:38:58,060 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-10-13 21:38:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:58,061 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-13 21:38:58,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:38:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-13 21:38:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 21:38:58,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:58,063 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:58,063 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:58,064 INFO L82 PathProgramCache]: Analyzing trace with hash 984169796, now seen corresponding path program 1 times [2019-10-13 21:38:58,064 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:58,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158700803] [2019-10-13 21:38:58,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:58,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:58,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:58,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158700803] [2019-10-13 21:38:58,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944092209] [2019-10-13 21:38:58,125 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 21:38:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:58,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:58,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:58,220 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:58,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1187696276] [2019-10-13 21:38:58,300 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-13 21:38:58,300 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:58,308 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:58,316 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:58,317 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:58,551 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 21:38:58,987 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:38:59,398 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:38:59,732 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:38:59,765 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:38:59,777 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:38:59,785 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:00,107 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:00,120 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:00,130 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:00,186 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:00,358 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2019-10-13 21:39:00,385 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-13 21:39:00,393 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:39:00,393 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:39:00,394 INFO L193 IcfgInterpreter]: Reachable states at location L11 satisfy 38#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:00,394 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 217#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_5) 0))) (= 0 (select (select |#memory_int| v_prenex_5) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (not (<= 2 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_1|) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:39:00,395 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 222#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_5) 0))) (= 0 (select (select |#memory_int| v_prenex_5) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (not (<= 2 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_1|) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:39:00,395 INFO L193 IcfgInterpreter]: Reachable states at location L25-3 satisfy 203#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (<= main_~j~0 2) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:00,396 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 226#(and (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:39:00,397 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 168#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= 0 main_~i~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= main_~i~0 0)) [2019-10-13 21:39:00,398 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 212#(and (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_5) 0))) (= 0 (select (select |#memory_int| v_prenex_5) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (not (<= 2 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_1|) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:39:00,399 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~CELLCOUNT~0 0) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:00,399 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= 0 ~CELLCOUNT~0) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (<= ~CELLCOUNT~0 0) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:00,399 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 231#(and (= ~CELLCOUNT~0 0) (= |#valid| (store |old(#valid)| 0 0)) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:00,400 INFO L193 IcfgInterpreter]: Reachable states at location L40-2 satisfy 176#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= main_~i~0 0)) [2019-10-13 21:39:00,400 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:39:00,400 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 43#(and (<= |main_~#volArray~0.offset| 0) (= 0 |#NULL.base|) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (<= 1 main_~DEFAULTVALUE~0) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:00,400 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 207#(exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_5) 0))) (= 0 (select (select |#memory_int| v_prenex_5) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (not (<= 2 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| v_prenex_6) 0))) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (< 0 ~CELLCOUNT~0) (<= |#NULL.base| 0) (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_1|) 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:39:00,401 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 163#(and (or (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) (and (<= |main_~#volArray~0.offset| 0) (not (= 0 (ite (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) 1 0))) (= 0 |#NULL.base|) (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (<= 1 main_~i~0) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= main_~i~0 1) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (= main_~i~0 1) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0))) (<= 1 main_~DEFAULTVALUE~0)) [2019-10-13 21:39:00,859 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-10-13 21:39:01,321 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:39:01,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 12] total 16 [2019-10-13 21:39:01,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327381637] [2019-10-13 21:39:01,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:39:01,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:39:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:39:01,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:39:01,328 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 16 states. [2019-10-13 21:39:01,751 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-13 21:39:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:39:02,455 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2019-10-13 21:39:02,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:39:02,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2019-10-13 21:39:02,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:39:02,457 INFO L225 Difference]: With dead ends: 43 [2019-10-13 21:39:02,457 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 21:39:02,459 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:39:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 21:39:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2019-10-13 21:39:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:39:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-13 21:39:02,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-10-13 21:39:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:39:02,478 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-13 21:39:02,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:39:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-13 21:39:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:39:02,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:02,481 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:02,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:39:02,689 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:02,691 INFO L82 PathProgramCache]: Analyzing trace with hash 347980250, now seen corresponding path program 2 times [2019-10-13 21:39:02,691 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:02,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73729144] [2019-10-13 21:39:02,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:02,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:02,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:03,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73729144] [2019-10-13 21:39:03,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291094208] [2019-10-13 21:39:03,240 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 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 21:39:03,324 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:39:03,325 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:39:03,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-13 21:39:03,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:39:03,474 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:03,746 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:39:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:04,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58244212] [2019-10-13 21:39:04,269 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-13 21:39:04,269 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:39:04,270 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:39:04,270 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:39:04,271 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:39:04,340 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-13 21:39:04,656 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:05,098 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:05,470 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:05,819 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:05,945 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:05,954 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:05,964 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:05,973 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:06,001 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:06,194 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2019-10-13 21:39:06,204 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-13 21:39:06,208 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:39:06,209 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:39:06,209 INFO L193 IcfgInterpreter]: Reachable states at location L11 satisfy 38#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:06,209 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 230#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_16 Int) (v_prenex_17 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= 2 (select (select |#memory_int| v_prenex_16) 0)) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_17) 0)) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_17) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:39:06,210 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 235#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_16 Int) (v_prenex_17 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= 2 (select (select |#memory_int| v_prenex_16) 0)) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_17) 0)) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_17) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:39:06,210 INFO L193 IcfgInterpreter]: Reachable states at location L25-3 satisfy 216#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (<= main_~j~0 2) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:06,210 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 239#(and (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:39:06,211 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 169#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= 0 main_~i~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= main_~i~0 0)) [2019-10-13 21:39:06,211 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 225#(and (exists ((v_prenex_16 Int) (v_prenex_17 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= 2 (select (select |#memory_int| v_prenex_16) 0)) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_17) 0)) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_17) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:39:06,212 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~CELLCOUNT~0 0) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:06,215 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |old(~CELLCOUNT~0)|) (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (<= ~CELLCOUNT~0 0) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:06,216 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 244#(and (= ~CELLCOUNT~0 0) (= |#valid| (store |old(#valid)| 0 0)) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:06,216 INFO L193 IcfgInterpreter]: Reachable states at location L40-2 satisfy 177#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= main_~i~0 0)) [2019-10-13 21:39:06,216 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:39:06,217 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 43#(and (<= |main_~#volArray~0.offset| 0) (= 0 |#NULL.base|) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (<= 1 main_~DEFAULTVALUE~0) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:06,217 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 220#(exists ((v_prenex_16 Int) (v_prenex_17 Int) (|v_main_~#volArray~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= 2 (select (select |#memory_int| v_prenex_16) 0)) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_17) 0)) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (not (<= 2 (select (select |#memory_int| v_prenex_17) 0))) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (<= 2 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0))) (<= |#NULL.base| 0) (< 0 ~CELLCOUNT~0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (not (= 0 (select (select |#memory_int| |v_main_~#volArray~0.base_BEFORE_CALL_2|) 0)))))) [2019-10-13 21:39:06,217 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 164#(or (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) (and (<= |main_~#volArray~0.offset| 0) (not (= 0 (ite (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) 1 0))) (= 0 |#NULL.base|) (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (<= 1 main_~i~0) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= main_~i~0 1) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (= main_~i~0 1) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (<= 1 main_~DEFAULTVALUE~0) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0))) [2019-10-13 21:39:06,805 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-10-13 21:39:07,357 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:39:07,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10, 12] total 34 [2019-10-13 21:39:07,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935950270] [2019-10-13 21:39:07,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-13 21:39:07,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:39:07,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-13 21:39:07,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:39:07,362 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 34 states. [2019-10-13 21:39:07,785 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-13 21:39:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:39:09,526 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-10-13 21:39:09,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 21:39:09,527 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 17 [2019-10-13 21:39:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:39:09,531 INFO L225 Difference]: With dead ends: 47 [2019-10-13 21:39:09,531 INFO L226 Difference]: Without dead ends: 45 [2019-10-13 21:39:09,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=316, Invalid=2336, Unknown=0, NotChecked=0, Total=2652 [2019-10-13 21:39:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-13 21:39:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2019-10-13 21:39:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 21:39:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-13 21:39:09,548 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 17 [2019-10-13 21:39:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:39:09,548 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-13 21:39:09,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-13 21:39:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-13 21:39:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 21:39:09,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:09,549 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:09,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:39:09,753 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:09,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1233243831, now seen corresponding path program 1 times [2019-10-13 21:39:09,755 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:09,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763424181] [2019-10-13 21:39:09,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:09,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:09,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:10,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763424181] [2019-10-13 21:39:10,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384635607] [2019-10-13 21:39:10,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:39:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:10,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-13 21:39:10,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:39:10,166 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:12,398 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:39:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:16,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1353178514] [2019-10-13 21:39:16,647 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:39:16,648 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:39:16,648 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:39:16,649 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:39:16,649 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:39:16,675 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 21:39:16,782 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:17,021 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:17,229 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:17,327 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:17,336 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:17,345 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:17,353 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:17,370 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,473 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,551 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,558 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,564 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,571 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,577 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:18,689 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2019-10-13 21:39:18,725 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-13 21:39:18,729 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:39:18,729 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:39:18,729 INFO L193 IcfgInterpreter]: Reachable states at location L11 satisfy 38#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:18,730 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 562#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 __VERIFIER_assert_~cond) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:18,730 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 567#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 __VERIFIER_assert_~cond) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:18,730 INFO L193 IcfgInterpreter]: Reachable states at location L25-3 satisfy 538#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (<= main_~j~0 2) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:18,731 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 571#(and (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:39:18,731 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 557#(and (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= |#NULL.base| 0) (<= 1 __VERIFIER_assert_~cond) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:18,731 INFO L193 IcfgInterpreter]: Reachable states at location L3-3 satisfy 552#(and (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= |#NULL.base| 0) (<= 1 __VERIFIER_assert_~cond) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:18,731 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 445#(and (or (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (= main_~MINVAL~0 2) (= |main_~#volArray~0.offset| 0) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (= main_~MINVAL~0 2) (= |main_~#volArray~0.offset| 0) (<= main_~i~0 0) (= main_~DEFAULTVALUE~0 1) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= main_~i~0 0))) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0)) [2019-10-13 21:39:18,732 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 547#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 __VERIFIER_assert_~cond) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= |#NULL.base| 0) (<= 1 __VERIFIER_assert_~cond) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:39:18,732 INFO L193 IcfgInterpreter]: Reachable states at location L40-3 satisfy 500#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:18,732 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~CELLCOUNT~0 0) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:18,732 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= 0 ~CELLCOUNT~0) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (<= ~CELLCOUNT~0 0) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:18,732 INFO L193 IcfgInterpreter]: Reachable states at location L40-2 satisfy 385#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= main_~i~0 2147483647) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:18,733 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 576#(and (= ~CELLCOUNT~0 0) (= |#valid| (store |old(#valid)| 0 0)) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:18,733 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:39:18,733 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 43#(and (<= |main_~#volArray~0.offset| 0) (= 0 |#NULL.base|) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (<= 1 main_~DEFAULTVALUE~0) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:18,733 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 542#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0))) (or (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:39:18,734 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 175#(and (or (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) (and (<= |main_~#volArray~0.offset| 0) (not (= 0 (ite (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) 1 0))) (= 0 |#NULL.base|) (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (<= 1 main_~i~0) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= main_~i~0 1) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (= main_~i~0 1) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0))) (<= 1 main_~DEFAULTVALUE~0)) [2019-10-13 21:39:19,263 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-10-13 21:39:19,673 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2019-10-13 21:39:20,177 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:39:20,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12, 14] total 42 [2019-10-13 21:39:20,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847430367] [2019-10-13 21:39:20,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-10-13 21:39:20,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:39:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-10-13 21:39:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1543, Unknown=3, NotChecked=0, Total=1722 [2019-10-13 21:39:20,181 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 42 states. [2019-10-13 21:39:20,433 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-10-13 21:39:20,588 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-10-13 21:39:21,300 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-10-13 21:39:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:39:22,566 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-10-13 21:39:22,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-13 21:39:22,567 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 24 [2019-10-13 21:39:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:39:22,569 INFO L225 Difference]: With dead ends: 42 [2019-10-13 21:39:22,569 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 21:39:22,572 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=458, Invalid=3321, Unknown=3, NotChecked=0, Total=3782 [2019-10-13 21:39:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 21:39:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2019-10-13 21:39:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-13 21:39:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-10-13 21:39:22,583 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2019-10-13 21:39:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:39:22,583 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-10-13 21:39:22,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-10-13 21:39:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-10-13 21:39:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 21:39:22,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:22,586 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:22,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:39:22,790 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:22,791 INFO L82 PathProgramCache]: Analyzing trace with hash 733740858, now seen corresponding path program 2 times [2019-10-13 21:39:22,791 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:22,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391798630] [2019-10-13 21:39:22,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:22,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:22,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:39:23,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391798630] [2019-10-13 21:39:23,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230282593] [2019-10-13 21:39:23,092 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 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 21:39:23,177 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:39:23,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:39:23,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 21:39:23,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:39:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:39:23,328 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:39:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:39:23,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [66202038] [2019-10-13 21:39:23,429 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:39:23,429 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:39:23,429 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:39:23,430 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:39:23,430 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:39:23,455 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-13 21:39:23,551 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:23,803 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:23,845 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:23,854 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:23,864 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:24,027 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,057 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,068 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,078 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,114 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,204 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,217 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,242 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,266 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,275 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:25,437 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2019-10-13 21:39:25,490 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-13 21:39:25,495 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:39:25,495 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:39:25,495 INFO L193 IcfgInterpreter]: Reachable states at location L11 satisfy 38#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:25,496 INFO L193 IcfgInterpreter]: Reachable states at location L3-1 satisfy 551#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 __VERIFIER_assert_~cond) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:25,496 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 556#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 __VERIFIER_assert_~cond) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:25,497 INFO L193 IcfgInterpreter]: Reachable states at location L25-3 satisfy 527#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (<= main_~j~0 2) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:25,497 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 560#(and (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:39:25,497 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 546#(and (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= |#NULL.base| 0) (<= 1 __VERIFIER_assert_~cond) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:25,498 INFO L193 IcfgInterpreter]: Reachable states at location L3-3 satisfy 541#(and (or (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= |#NULL.base| 0) (<= 1 __VERIFIER_assert_~cond) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:25,498 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 434#(and (or (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (= main_~MINVAL~0 2) (= |main_~#volArray~0.offset| 0) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (= main_~MINVAL~0 2) (= |main_~#volArray~0.offset| 0) (<= main_~i~0 0) (= main_~DEFAULTVALUE~0 1) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= main_~i~0 0))) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0)) [2019-10-13 21:39:25,498 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 536#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 __VERIFIER_assert_~cond) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= |#NULL.base| 0) (<= 1 __VERIFIER_assert_~cond) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:39:25,499 INFO L193 IcfgInterpreter]: Reachable states at location L40-3 satisfy 489#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:25,499 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~CELLCOUNT~0 0) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:25,499 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (<= 0 |old(~CELLCOUNT~0)|) (= |old(~CELLCOUNT~0)| ~CELLCOUNT~0) (<= ~CELLCOUNT~0 0) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0) (= |old(#length)| |#length|)) [2019-10-13 21:39:25,500 INFO L193 IcfgInterpreter]: Reachable states at location L40-2 satisfy 374#(and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 0 main_~i~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= main_~i~0 2147483647) (<= ~CELLCOUNT~0 2147483647) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:25,500 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 565#(and (= ~CELLCOUNT~0 0) (= |#valid| (store |old(#valid)| 0 0)) (<= ~CELLCOUNT~0 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:39:25,500 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:39:25,501 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 43#(and (<= |main_~#volArray~0.offset| 0) (= 0 |#NULL.base|) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (<= 1 main_~DEFAULTVALUE~0) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0)) [2019-10-13 21:39:25,501 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 531#(and (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (= |#NULL.offset| 0))) (or (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= |#NULL.base| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 |#NULL.base|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:39:25,501 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 164#(or (and (= |#NULL.base| 0) (<= |main_~#volArray~0.offset| 0) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (= main_~MINVAL~0 2) (<= |#NULL.base| 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= |old(~CELLCOUNT~0)| 0) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 |old(~CELLCOUNT~0)|) (<= ~CELLCOUNT~0 2147483647) (<= 1 main_~i~0) (= main_~DEFAULTVALUE~0 1) (<= main_~MINVAL~0 2) (<= 1 main_~DEFAULTVALUE~0) (= |#NULL.offset| 0) (= |old(~CELLCOUNT~0)| 0)) (and (<= |main_~#volArray~0.offset| 0) (not (= 0 (ite (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) 1 0))) (= 0 |#NULL.base|) (= (ite (and (< ~CELLCOUNT~0 0) (not (= (mod ~CELLCOUNT~0 2) 0))) (+ (mod ~CELLCOUNT~0 2) (- 2)) (mod ~CELLCOUNT~0 2)) 0) (<= 0 |main_~#volArray~0.offset|) (= |main_~#volArray~0.offset| 0) (<= 0 |#NULL.base|) (<= main_~DEFAULTVALUE~0 1) (<= 0 |#NULL.offset|) (<= 0 |old(~CELLCOUNT~0)|) (= 2 main_~MINVAL~0) (= (store |old(#length)| |main_~#volArray~0.base| (* ~CELLCOUNT~0 4)) |#length|) (not (= |main_~#volArray~0.base| 0)) (<= 1 main_~i~0) (= |#valid| (store |old(#valid)| |main_~#volArray~0.base| 1)) (<= main_~MINVAL~0 2) (<= main_~i~0 1) (<= 1 ~CELLCOUNT~0) (<= 2 main_~MINVAL~0) (<= |#NULL.base| 0) (= main_~i~0 1) (<= |old(~CELLCOUNT~0)| 0) (< |main_~#volArray~0.base| |#StackHeapBarrier|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (< 1 ~CELLCOUNT~0) (<= ~CELLCOUNT~0 2147483647) (= 0 (select |old(#valid)| |main_~#volArray~0.base|)) (<= 1 main_~DEFAULTVALUE~0) (= 1 main_~DEFAULTVALUE~0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (<= 0 (+ ~CELLCOUNT~0 2147483648)) (= |old(~CELLCOUNT~0)| 0))) [2019-10-13 21:39:26,192 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-10-13 21:39:27,025 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:39:27,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7, 14] total 33 [2019-10-13 21:39:27,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252934975] [2019-10-13 21:39:27,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-10-13 21:39:27,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:39:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-10-13 21:39:27,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:39:27,028 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 33 states. [2019-10-13 21:39:27,296 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-10-13 21:39:27,444 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-10-13 21:39:28,060 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-10-13 21:39:28,656 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-10-13 21:39:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:39:29,416 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2019-10-13 21:39:29,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-10-13 21:39:29,417 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 31 [2019-10-13 21:39:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:39:29,418 INFO L225 Difference]: With dead ends: 65 [2019-10-13 21:39:29,418 INFO L226 Difference]: Without dead ends: 41 [2019-10-13 21:39:29,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=422, Invalid=2658, Unknown=0, NotChecked=0, Total=3080 [2019-10-13 21:39:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-13 21:39:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-10-13 21:39:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 21:39:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-13 21:39:29,436 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 31 [2019-10-13 21:39:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:39:29,437 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-13 21:39:29,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-10-13 21:39:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-13 21:39:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-13 21:39:29,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:29,438 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:29,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:39:29,644 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash -858045180, now seen corresponding path program 3 times [2019-10-13 21:39:29,645 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:29,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539754072] [2019-10-13 21:39:29,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:29,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:29,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:39:29,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539754072] [2019-10-13 21:39:29,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082873679] [2019-10-13 21:39:29,875 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 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 21:39:29,990 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:39:29,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:39:29,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 21:39:29,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:39:30,176 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:39:30,615 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:39:31,357 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 23 [2019-10-13 21:39:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:39:31,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [954705686] [2019-10-13 21:39:31,537 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:39:31,537 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:39:31,538 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:39:31,539 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:39:31,539 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:39:31,570 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 21:39:31,712 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:32,006 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:32,291 WARN L225 Elim1Store]: Array PQE input equivalent to false