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-examples/standard_partial_init_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:35:43,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:35:43,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:35:43,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:35:43,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:35:43,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:35:43,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:35:43,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:35:43,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:35:43,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:35:43,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:35:43,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:35:43,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:35:43,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:35:43,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:35:43,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:35:43,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:35:43,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:35:43,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:35:43,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:35:43,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:35:43,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:35:43,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:35:43,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:35:43,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:35:43,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:35:43,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:35:43,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:35:43,329 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 21:35:43,351 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:35:43,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:35:43,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:35:43,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:35:43,356 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:35:43,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:35:43,357 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:35:43,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:35:43,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:35:43,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:35:43,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:35:43,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:35:43,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:35:43,359 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:35:43,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:35:43,359 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:35:43,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:35:43,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:35:43,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:35:43,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:35:43,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:35:43,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:35:43,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:35:43,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:35:43,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:35:43,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:35:43,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:35:43,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:35:43,362 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 21:35:43,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:35:43,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:35:43,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:35:43,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:35:43,673 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:35:43,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2019-10-13 21:35:43,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/170c85b06/e4e0df37c8464fb994c465af39025589/FLAGeafb72b31 [2019-10-13 21:35:44,207 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:35:44,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partial_init_ground.i [2019-10-13 21:35:44,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/170c85b06/e4e0df37c8464fb994c465af39025589/FLAGeafb72b31 [2019-10-13 21:35:44,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/170c85b06/e4e0df37c8464fb994c465af39025589 [2019-10-13 21:35:44,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:35:44,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:35:44,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:44,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:35:44,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:35:44,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:44" (1/1) ... [2019-10-13 21:35:44,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191613fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:44, skipping insertion in model container [2019-10-13 21:35:44,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:44" (1/1) ... [2019-10-13 21:35:44,617 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:35:44,631 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:35:44,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:44,873 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:35:44,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:35:45,007 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:35:45,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45 WrapperNode [2019-10-13 21:35:45,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:35:45,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:35:45,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:35:45,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:35:45,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (1/1) ... [2019-10-13 21:35:45,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (1/1) ... [2019-10-13 21:35:45,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (1/1) ... [2019-10-13 21:35:45,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (1/1) ... [2019-10-13 21:35:45,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (1/1) ... [2019-10-13 21:35:45,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (1/1) ... [2019-10-13 21:35:45,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (1/1) ... [2019-10-13 21:35:45,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:35:45,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:35:45,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:35:45,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:35:45,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (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 21:35:45,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:35:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:35:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:35:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:35:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:35:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:35:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:35:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:35:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:35:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:35:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:35:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:35:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:35:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:35:45,570 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:35:45,570 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:35:45,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:45 BoogieIcfgContainer [2019-10-13 21:35:45,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:35:45,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:35:45,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:35:45,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:35:45,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:35:44" (1/3) ... [2019-10-13 21:35:45,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247fcab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:45, skipping insertion in model container [2019-10-13 21:35:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:45" (2/3) ... [2019-10-13 21:35:45,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247fcab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:45, skipping insertion in model container [2019-10-13 21:35:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:45" (3/3) ... [2019-10-13 21:35:45,579 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2019-10-13 21:35:45,589 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:35:45,596 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:35:45,611 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:35:45,635 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:35:45,635 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:35:45,635 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:35:45,635 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:35:45,635 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:35:45,636 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:35:45,636 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:35:45,636 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:35:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-13 21:35:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:35:45,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:45,661 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:45,663 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:45,668 INFO L82 PathProgramCache]: Analyzing trace with hash -2016740759, now seen corresponding path program 1 times [2019-10-13 21:35:45,676 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:45,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222750852] [2019-10-13 21:35:45,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:45,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:45,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:45,846 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 21:35:45,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222750852] [2019-10-13 21:35:45,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:35:45,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:35:45,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087194603] [2019-10-13 21:35:45,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:35:45,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:35:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:35:45,868 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-10-13 21:35:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:45,916 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2019-10-13 21:35:45,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:35:45,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-13 21:35:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:45,927 INFO L225 Difference]: With dead ends: 40 [2019-10-13 21:35:45,928 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:35:45,931 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 21:35:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:35:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:35:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:35:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 21:35:45,982 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2019-10-13 21:35:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:45,983 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 21:35:45,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:35:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 21:35:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:35:45,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:45,985 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:45,986 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 826554714, now seen corresponding path program 1 times [2019-10-13 21:35:45,987 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:45,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227114870] [2019-10-13 21:35:45,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:45,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:45,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:35:46,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227114870] [2019-10-13 21:35:46,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260540734] [2019-10-13 21:35:46,119 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 21:35:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:46,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:35:46,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:35:46,222 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:35:46,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1300033549] [2019-10-13 21:35:46,299 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:35:46,299 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:46,306 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:46,314 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:46,315 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:46,478 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:51,282 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 21:35:51,307 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:51,314 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:51,314 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:51,315 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 157#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 21:35:51,315 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 162#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:35:51,315 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 171#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:51,316 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 137#(<= 0 main_~i~0) [2019-10-13 21:35:51,316 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 167#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:35:51,316 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 147#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= (select (select |#memory_int| |main_~#C~0.base|) (+ (* main_~x~0 4) |main_~#C~0.offset|)) |main_#t~mem7|) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:51,317 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:51,317 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:51,317 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 176#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:51,317 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:51,318 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 152#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 21:35:51,318 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 62#true [2019-10-13 21:35:51,318 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 142#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:51,660 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:51,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 21:35:51,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321559947] [2019-10-13 21:35:51,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:35:51,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:51,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:35:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:35:51,667 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 17 states. [2019-10-13 21:35:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:52,270 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2019-10-13 21:35:52,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:35:52,272 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2019-10-13 21:35:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:52,273 INFO L225 Difference]: With dead ends: 47 [2019-10-13 21:35:52,274 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 21:35:52,275 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:35:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 21:35:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2019-10-13 21:35:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 21:35:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-13 21:35:52,286 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2019-10-13 21:35:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:52,287 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-13 21:35:52,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:35:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-13 21:35:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:35:52,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:52,288 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:52,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:52,493 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1090629335, now seen corresponding path program 2 times [2019-10-13 21:35:52,494 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:52,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248747347] [2019-10-13 21:35:52,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:52,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:52,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:52,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248747347] [2019-10-13 21:35:52,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815169529] [2019-10-13 21:35:52,606 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 21:35:52,695 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:35:52,695 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:52,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:35:52,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:52,726 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:35:52,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1705063336] [2019-10-13 21:35:52,808 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:35:52,808 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:52,808 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:52,809 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:52,809 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:52,858 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:53,462 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 21:35:53,491 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:53,499 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:53,500 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:53,500 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 21:35:53,500 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,500 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:53,501 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 147#(<= 0 main_~i~0) [2019-10-13 21:35:53,501 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:35:53,501 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 157#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= (select (select |#memory_int| |main_~#C~0.base|) (+ (* main_~x~0 4) |main_~#C~0.offset|)) |main_#t~mem7|) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:53,501 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:53,501 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:53,502 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:53,502 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:53,502 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 21:35:53,502 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 72#true [2019-10-13 21:35:53,503 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 152#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:53,814 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:53,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 23 [2019-10-13 21:35:53,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265005598] [2019-10-13 21:35:53,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 21:35:53,816 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 21:35:53,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:35:53,818 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 23 states. [2019-10-13 21:35:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:54,526 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2019-10-13 21:35:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:35:54,529 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2019-10-13 21:35:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:54,530 INFO L225 Difference]: With dead ends: 62 [2019-10-13 21:35:54,530 INFO L226 Difference]: Without dead ends: 45 [2019-10-13 21:35:54,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:35:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-13 21:35:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-10-13 21:35:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-13 21:35:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-10-13 21:35:54,541 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 20 [2019-10-13 21:35:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:54,542 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-10-13 21:35:54,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 21:35:54,542 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-10-13 21:35:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 21:35:54,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:54,543 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:54,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:54,752 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:54,753 INFO L82 PathProgramCache]: Analyzing trace with hash -441096375, now seen corresponding path program 3 times [2019-10-13 21:35:54,754 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:54,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025940529] [2019-10-13 21:35:54,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:54,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:54,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:35:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:35:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:55,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025940529] [2019-10-13 21:35:55,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567024886] [2019-10-13 21:35:55,004 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 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 21:35:55,102 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:35:55,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:35:55,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:35:55,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:35:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:55,130 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:35:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:35:55,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742767316] [2019-10-13 21:35:55,383 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:35:55,384 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:35:55,384 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:35:55,384 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:35:55,385 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:35:55,418 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:35:57,877 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 21:35:57,889 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:35:57,893 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:35:57,893 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:35:57,893 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 169#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 21:35:57,894 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 174#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:35:57,894 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 183#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:35:57,894 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 149#(<= 0 main_~i~0) [2019-10-13 21:35:57,894 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 179#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:35:57,895 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 159#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= (select (select |#memory_int| |main_~#C~0.base|) (+ (* main_~x~0 4) |main_~#C~0.offset|)) |main_#t~mem7|) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:57,895 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:57,895 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:57,895 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 188#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:35:57,896 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:35:57,896 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 164#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 21:35:57,896 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 74#true [2019-10-13 21:35:57,896 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 154#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:35:58,266 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:35:58,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 11] total 35 [2019-10-13 21:35:58,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800508007] [2019-10-13 21:35:58,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 21:35:58,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:35:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 21:35:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:35:58,271 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 35 states. [2019-10-13 21:35:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:35:59,730 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2019-10-13 21:35:59,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 21:35:59,730 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 32 [2019-10-13 21:35:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:35:59,731 INFO L225 Difference]: With dead ends: 92 [2019-10-13 21:35:59,732 INFO L226 Difference]: Without dead ends: 69 [2019-10-13 21:35:59,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=979, Invalid=3053, Unknown=0, NotChecked=0, Total=4032 [2019-10-13 21:35:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-13 21:35:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2019-10-13 21:35:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-13 21:35:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2019-10-13 21:35:59,746 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 32 [2019-10-13 21:35:59,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:35:59,747 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2019-10-13 21:35:59,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 21:35:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2019-10-13 21:35:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 21:35:59,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:35:59,749 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:35:59,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:35:59,950 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:35:59,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:35:59,951 INFO L82 PathProgramCache]: Analyzing trace with hash -581051511, now seen corresponding path program 4 times [2019-10-13 21:35:59,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:35:59,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756377800] [2019-10-13 21:35:59,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:59,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:35:59,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:36:00,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756377800] [2019-10-13 21:36:00,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247573065] [2019-10-13 21:36:00,362 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:36:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:00,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 21:36:00,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:36:00,527 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:36:01,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [446031744] [2019-10-13 21:36:01,241 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:36:01,241 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:36:01,242 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:36:01,242 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:36:01,242 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:36:01,273 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:36:01,735 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 21:36:01,751 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:36:01,755 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:36:01,755 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:36:01,756 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 167#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 21:36:01,756 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 172#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:36:01,756 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 181#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:36:01,756 INFO L193 IcfgInterpreter]: Reachable states at location L17-3 satisfy 147#(<= 0 main_~i~0) [2019-10-13 21:36:01,757 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 177#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 21:36:01,757 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 157#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (= (select (select |#memory_int| |main_~#C~0.base|) (+ (* main_~x~0 4) |main_~#C~0.offset|)) |main_#t~mem7|) (= main_~x~0 0) (< main_~x~0 main_~j~0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:01,757 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:36:01,757 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:36:01,757 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 186#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:36:01,758 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:36:01,758 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 162#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-13 21:36:01,758 INFO L193 IcfgInterpreter]: Reachable states at location L12-3 satisfy 72#true [2019-10-13 21:36:01,758 INFO L193 IcfgInterpreter]: Reachable states at location L24-3 satisfy 152#(and (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:02,132 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:36:02,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 11] total 59 [2019-10-13 21:36:02,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301837900] [2019-10-13 21:36:02,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-10-13 21:36:02,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:02,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-10-13 21:36:02,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=2216, Unknown=0, NotChecked=0, Total=3422 [2019-10-13 21:36:02,138 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 59 states. [2019-10-13 21:36:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:06,157 INFO L93 Difference]: Finished difference Result 152 states and 210 transitions. [2019-10-13 21:36:06,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-10-13 21:36:06,157 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 56 [2019-10-13 21:36:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:06,162 INFO L225 Difference]: With dead ends: 152 [2019-10-13 21:36:06,163 INFO L226 Difference]: Without dead ends: 117 [2019-10-13 21:36:06,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3607, Invalid=8825, Unknown=0, NotChecked=0, Total=12432 [2019-10-13 21:36:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-13 21:36:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2019-10-13 21:36:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-13 21:36:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2019-10-13 21:36:06,203 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 56 [2019-10-13 21:36:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:06,204 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2019-10-13 21:36:06,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-10-13 21:36:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2019-10-13 21:36:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 21:36:06,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:06,213 INFO L380 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:06,415 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:06,416 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:06,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1405084681, now seen corresponding path program 5 times [2019-10-13 21:36:06,418 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:06,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385984069] [2019-10-13 21:36:06,419 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:06,419 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:06,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-10-13 21:36:07,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385984069] [2019-10-13 21:36:07,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207094547] [2019-10-13 21:36:07,657 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 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