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_strcpy_original-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:36:11,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:36:11,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:36:11,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:36:11,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:36:11,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:36:11,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:36:11,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:36:11,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:36:11,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:36:11,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:36:11,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:36:11,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:36:11,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:36:11,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:36:11,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:36:11,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:36:11,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:36:11,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:36:11,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:36:11,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:36:11,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:36:11,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:36:11,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:36:11,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:36:11,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:36:11,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:36:11,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:36:11,071 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 21:36:11,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:36:11,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:36:11,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:36:11,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:36:11,087 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:36:11,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:36:11,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:36:11,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:36:11,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:36:11,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:36:11,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:36:11,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:36:11,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:36:11,089 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:36:11,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:36:11,089 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:36:11,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:36:11,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:36:11,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:36:11,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:36:11,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:36:11,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:36:11,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:36:11,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:36:11,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:36:11,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:36:11,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:36:11,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:36:11,092 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 21:36:11,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:36:11,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:36:11,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:36:11,459 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:36:11,460 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:36:11,460 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_original-2.i [2019-10-13 21:36:11,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6d4415e/bff51199c17746bb914e4de53c9868f6/FLAG680408efa [2019-10-13 21:36:12,011 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:36:12,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_strcpy_original-2.i [2019-10-13 21:36:12,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6d4415e/bff51199c17746bb914e4de53c9868f6/FLAG680408efa [2019-10-13 21:36:12,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6d4415e/bff51199c17746bb914e4de53c9868f6 [2019-10-13 21:36:12,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:36:12,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:36:12,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:36:12,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:36:12,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:36:12,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d46bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12, skipping insertion in model container [2019-10-13 21:36:12,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,447 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:36:12,467 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:36:12,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:36:12,728 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:36:12,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:36:12,868 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:36:12,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12 WrapperNode [2019-10-13 21:36:12,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:36:12,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:36:12,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:36:12,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:36:12,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (1/1) ... [2019-10-13 21:36:12,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:36:12,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:36:12,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:36:12,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:36:12,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (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 21:36:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:36:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:36:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:36:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:36:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:36:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:36:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:36:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:36:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:36:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:36:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:36:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:36:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:36:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:36:13,355 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:36:13,356 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:36:13,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:36:13 BoogieIcfgContainer [2019-10-13 21:36:13,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:36:13,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:36:13,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:36:13,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:36:13,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:36:12" (1/3) ... [2019-10-13 21:36:13,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609d00cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:36:13, skipping insertion in model container [2019-10-13 21:36:13,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:12" (2/3) ... [2019-10-13 21:36:13,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609d00cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:36:13, skipping insertion in model container [2019-10-13 21:36:13,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:36:13" (3/3) ... [2019-10-13 21:36:13,374 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-2.i [2019-10-13 21:36:13,385 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:36:13,395 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:36:13,407 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:36:13,438 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:36:13,438 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:36:13,438 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:36:13,438 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:36:13,439 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:36:13,439 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:36:13,439 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:36:13,439 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:36:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 21:36:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:36:13,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:13,464 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:13,466 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash -774447507, now seen corresponding path program 1 times [2019-10-13 21:36:13,478 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:13,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274845736] [2019-10-13 21:36:13,479 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:13,479 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:13,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:13,603 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 21:36:13,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274845736] [2019-10-13 21:36:13,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:36:13,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:36:13,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339949915] [2019-10-13 21:36:13,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:36:13,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:36:13,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:36:13,626 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-13 21:36:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:13,652 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-10-13 21:36:13,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:36:13,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-13 21:36:13,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:13,661 INFO L225 Difference]: With dead ends: 38 [2019-10-13 21:36:13,662 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 21:36:13,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:36:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 21:36:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 21:36:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 21:36:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-13 21:36:13,706 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2019-10-13 21:36:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:13,707 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-13 21:36:13,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:36:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-13 21:36:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:36:13,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:13,708 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:13,709 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:13,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1909411100, now seen corresponding path program 1 times [2019-10-13 21:36:13,710 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:13,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880805714] [2019-10-13 21:36:13,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:13,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:13,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:13,791 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 21:36:13,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880805714] [2019-10-13 21:36:13,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:36:13,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:36:13,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219739583] [2019-10-13 21:36:13,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:36:13,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:13,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:36:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:36:13,795 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-10-13 21:36:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:13,809 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-10-13 21:36:13,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:36:13,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-13 21:36:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:13,810 INFO L225 Difference]: With dead ends: 33 [2019-10-13 21:36:13,811 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 21:36:13,812 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 21:36:13,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 21:36:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 21:36:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 21:36:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-13 21:36:13,818 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-10-13 21:36:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:13,818 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-13 21:36:13,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:36:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-13 21:36:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 21:36:13,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:13,820 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:13,820 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:13,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1099482512, now seen corresponding path program 1 times [2019-10-13 21:36:13,821 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:13,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046753206] [2019-10-13 21:36:13,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:13,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:13,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:36:13,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046753206] [2019-10-13 21:36:13,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399024480] [2019-10-13 21:36:13,905 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 21:36:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:13,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:36:13,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:36:14,012 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:36:14,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609808705] [2019-10-13 21:36:14,080 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 21:36:14,081 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:36:14,088 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:36:14,096 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:36:14,097 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:36:14,301 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:36:14,603 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 22 for LOIs [2019-10-13 21:36:14,629 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:36:14,641 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:36:14,641 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:36:14,642 INFO L193 IcfgInterpreter]: Reachable states at location L15-4 satisfy 73#(and (not (< main_~j~0 100000)) (<= 100000 main_~j~0)) [2019-10-13 21:36:14,643 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 128#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:36:14,643 INFO L193 IcfgInterpreter]: Reachable states at location L15-2 satisfy 81#(<= 100000 main_~j~0) [2019-10-13 21:36:14,643 INFO L193 IcfgInterpreter]: Reachable states at location L5-1 satisfy 119#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((|v_main_~#dst~0.offset_BEFORE_CALL_1| Int) (|v_main_~#src~0.base_BEFORE_CALL_1| Int) (|v_main_~#src~0.offset_BEFORE_CALL_1| Int) (|v_main_~#dst~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|))) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:14,644 INFO L193 IcfgInterpreter]: Reachable states at location L20-5 satisfy 91#(and (<= 0 main_~i~0) (not (< main_~j~0 100000)) (<= 100000 main_~j~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 21:36:14,645 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 21:36:14,646 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 21:36:14,646 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 133#(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 21:36:14,646 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 99#(and (<= 0 main_~i~0) (<= 100000 main_~j~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 21:36:14,647 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:36:14,666 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 114#(and (exists ((|v_main_~#dst~0.offset_BEFORE_CALL_1| Int) (|v_main_~#src~0.base_BEFORE_CALL_1| Int) (|v_main_~#src~0.offset_BEFORE_CALL_1| Int) (|v_main_~#dst~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|))) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:14,668 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 109#(exists ((|v_main_~#dst~0.offset_BEFORE_CALL_1| Int) (|v_main_~#src~0.base_BEFORE_CALL_1| Int) (|v_main_~#src~0.offset_BEFORE_CALL_1| Int) (|v_main_~#dst~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|))) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))))) [2019-10-13 21:36:14,668 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 68#true [2019-10-13 21:36:14,669 INFO L193 IcfgInterpreter]: Reachable states at location L15-5 satisfy 86#(and (or (and (<= main_~i~0 100000) (<= 100000 main_~j~0)) (and (<= 100000 main_~i~0) (<= 100000 main_~j~0))) (or (and (not (< main_~j~0 100000)) (not (< main_~i~0 100000))) (and (not (< main_~j~0 100000)) (= 0 (select (select |#memory_int| |main_~#src~0.base|) (+ (* main_~i~0 4) |main_~#src~0.offset|)))))) [2019-10-13 21:36:14,670 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 124#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (exists ((|v_main_~#dst~0.offset_BEFORE_CALL_1| Int) (|v_main_~#src~0.base_BEFORE_CALL_1| Int) (|v_main_~#src~0.offset_BEFORE_CALL_1| Int) (|v_main_~#dst~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|))) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_1|) |v_main_~#dst~0.offset_BEFORE_CALL_1|)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_1|) |v_main_~#src~0.offset_BEFORE_CALL_1|) 0))))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:14,670 INFO L193 IcfgInterpreter]: Reachable states at location L21 satisfy 104#(and (= |main_#t~mem6| (select (select |#memory_int| |main_~#dst~0.base|) (+ (* main_~i~0 4) |main_~#dst~0.offset|))) (< main_~i~0 100000) (<= 0 main_~i~0) (not (< main_~j~0 100000)) (not (= 0 (select (select |#memory_int| |main_~#src~0.base|) (+ (* main_~i~0 4) |main_~#src~0.offset|)))) (<= 100000 main_~j~0) (= |main_#t~mem7| (select (select |#memory_int| |main_~#src~0.base|) (+ (* main_~i~0 4) |main_~#src~0.offset|))) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 21:36:15,153 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:36:15,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 12] total 18 [2019-10-13 21:36:15,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26886616] [2019-10-13 21:36:15,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:36:15,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:15,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:36:15,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:36:15,160 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 18 states. [2019-10-13 21:36:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:15,782 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-10-13 21:36:15,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:36:15,783 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2019-10-13 21:36:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:15,784 INFO L225 Difference]: With dead ends: 46 [2019-10-13 21:36:15,784 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 21:36:15,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:36:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 21:36:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2019-10-13 21:36:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 21:36:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-13 21:36:15,794 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 16 [2019-10-13 21:36:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:15,794 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-13 21:36:15,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:36:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-13 21:36:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 21:36:15,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:15,796 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:15,999 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:16,000 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:16,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1352911388, now seen corresponding path program 2 times [2019-10-13 21:36:16,001 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:16,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954492104] [2019-10-13 21:36:16,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:16,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:16,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:36:16,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954492104] [2019-10-13 21:36:16,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666070533] [2019-10-13 21:36:16,128 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 21:36:16,183 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:36:16,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:36:16,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:36:16,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:36:16,285 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:36:16,416 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:36:16,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-13 21:36:16,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057657026] [2019-10-13 21:36:16,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:36:16,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:16,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:36:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:36:16,418 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 11 states. [2019-10-13 21:36:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:16,533 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-10-13 21:36:16,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:36:16,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2019-10-13 21:36:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:16,536 INFO L225 Difference]: With dead ends: 42 [2019-10-13 21:36:16,536 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 21:36:16,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:36:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 21:36:16,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2019-10-13 21:36:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 21:36:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-10-13 21:36:16,547 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2019-10-13 21:36:16,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:16,548 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-10-13 21:36:16,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:36:16,548 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-10-13 21:36:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:36:16,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:16,549 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:16,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:16,753 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1203464079, now seen corresponding path program 1 times [2019-10-13 21:36:16,753 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:16,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659102511] [2019-10-13 21:36:16,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:16,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:16,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:36:16,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659102511] [2019-10-13 21:36:16,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208660363] [2019-10-13 21:36:16,830 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 21:36:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:16,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:36:16,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:36:16,897 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:36:16,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [753740986] [2019-10-13 21:36:16,964 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 21:36:16,965 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:36:16,965 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:36:16,966 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:36:16,966 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:36:17,000 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:36:17,245 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 22 for LOIs [2019-10-13 21:36:17,265 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:36:17,279 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:36:17,280 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:36:17,280 INFO L193 IcfgInterpreter]: Reachable states at location L15-4 satisfy 140#(and (or (= (select (select |#memory_int| |main_~#dst~0.base|) (+ (* main_~i~0 4) |main_~#dst~0.offset| (- 4))) (select (select |#memory_int| |main_~#src~0.base|) (+ (* main_~i~0 4) |main_~#src~0.offset| (- 4)))) (not (< main_~j~0 100000))) (<= 100000 main_~j~0)) [2019-10-13 21:36:17,280 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 163#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:36:17,281 INFO L193 IcfgInterpreter]: Reachable states at location L15-2 satisfy 111#(<= 100000 main_~j~0) [2019-10-13 21:36:17,282 INFO L193 IcfgInterpreter]: Reachable states at location L5-1 satisfy 154#(and (exists ((|v_main_~#dst~0.base_BEFORE_CALL_2| Int) (|v_main_~#dst~0.offset_BEFORE_CALL_2| Int) (|v_main_~#src~0.base_BEFORE_CALL_2| Int) (|v_main_~#src~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|))))) (<= __VERIFIER_assert_~cond 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 21:36:17,282 INFO L193 IcfgInterpreter]: Reachable states at location L20-5 satisfy 121#(and (<= 0 main_~i~0) (<= 100000 main_~j~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 21:36:17,283 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 21:36:17,283 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 21:36:17,283 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 168#(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 21:36:17,284 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 129#(and (<= 0 main_~i~0) (<= 100000 main_~j~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 21:36:17,284 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:36:17,286 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 149#(and (exists ((|v_main_~#dst~0.base_BEFORE_CALL_2| Int) (|v_main_~#dst~0.offset_BEFORE_CALL_2| Int) (|v_main_~#src~0.base_BEFORE_CALL_2| Int) (|v_main_~#src~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:17,286 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 144#(exists ((|v_main_~#dst~0.base_BEFORE_CALL_2| Int) (|v_main_~#dst~0.offset_BEFORE_CALL_2| Int) (|v_main_~#src~0.base_BEFORE_CALL_2| Int) (|v_main_~#src~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|))))) [2019-10-13 21:36:17,287 INFO L193 IcfgInterpreter]: Reachable states at location L11-2 satisfy 68#true [2019-10-13 21:36:17,287 INFO L193 IcfgInterpreter]: Reachable states at location L15-5 satisfy 116#(<= 100000 main_~j~0) [2019-10-13 21:36:17,287 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 159#(and (exists ((|v_main_~#dst~0.base_BEFORE_CALL_2| Int) (|v_main_~#dst~0.offset_BEFORE_CALL_2| Int) (|v_main_~#src~0.base_BEFORE_CALL_2| Int) (|v_main_~#src~0.offset_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) 0)) (= (select (select |#memory_int| |v_main_~#src~0.base_BEFORE_CALL_2|) |v_main_~#src~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#dst~0.base_BEFORE_CALL_2|) |v_main_~#dst~0.offset_BEFORE_CALL_2|))))) (<= __VERIFIER_assert_~cond 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 21:36:17,287 INFO L193 IcfgInterpreter]: Reachable states at location L21 satisfy 134#(and (= |main_#t~mem6| (select (select |#memory_int| |main_~#dst~0.base|) (+ (* main_~i~0 4) |main_~#dst~0.offset|))) (< main_~i~0 100000) (<= 0 main_~i~0) (not (= 0 (select (select |#memory_int| |main_~#src~0.base|) (+ (* main_~i~0 4) |main_~#src~0.offset|)))) (<= 100000 main_~j~0) (= |main_#t~mem7| (select (select |#memory_int| |main_~#src~0.base|) (+ (* main_~i~0 4) |main_~#src~0.offset|))) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-13 21:36:17,600 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:36:17,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 23 [2019-10-13 21:36:17,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446605856] [2019-10-13 21:36:17,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 21:36:17,603 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 21:36:17,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:36:17,604 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 23 states. [2019-10-13 21:36:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:18,370 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2019-10-13 21:36:18,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:36:18,371 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2019-10-13 21:36:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:18,372 INFO L225 Difference]: With dead ends: 56 [2019-10-13 21:36:18,373 INFO L226 Difference]: Without dead ends: 41 [2019-10-13 21:36:18,374 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:36:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-13 21:36:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2019-10-13 21:36:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 21:36:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-10-13 21:36:18,395 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 21 [2019-10-13 21:36:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:18,396 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2019-10-13 21:36:18,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 21:36:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2019-10-13 21:36:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 21:36:18,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:18,399 INFO L380 BasicCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:18,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:18,605 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash 520950543, now seen corresponding path program 2 times [2019-10-13 21:36:18,607 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:18,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178415137] [2019-10-13 21:36:18,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:18,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:18,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:36:18,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178415137] [2019-10-13 21:36:18,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076589675] [2019-10-13 21:36:18,795 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 21:36:18,877 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:36:18,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:36:18,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 21:36:18,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:36:19,080 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:19,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:19,369 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-13 21:36:19,375 INFO L168 Benchmark]: Toolchain (without parser) took 6944.04 ms. Allocated memory was 135.8 MB in the beginning and 287.8 MB in the end (delta: 152.0 MB). Free memory was 100.7 MB in the beginning and 191.3 MB in the end (delta: -90.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:36:19,376 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-13 21:36:19,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.77 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 178.5 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:36:19,387 INFO L168 Benchmark]: Boogie Preprocessor took 48.22 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 176.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:36:19,387 INFO L168 Benchmark]: RCFGBuilder took 439.74 ms. Allocated memory is still 200.3 MB. Free memory was 176.7 MB in the beginning and 157.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:36:19,388 INFO L168 Benchmark]: TraceAbstraction took 6011.13 ms. Allocated memory was 200.3 MB in the beginning and 287.8 MB in the end (delta: 87.6 MB). Free memory was 157.8 MB in the beginning and 191.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:36:19,393 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 437.77 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 178.5 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.22 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 176.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 439.74 ms. Allocated memory is still 200.3 MB. Free memory was 176.7 MB in the beginning and 157.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6011.13 ms. Allocated memory was 200.3 MB in the beginning and 287.8 MB in the end (delta: 87.6 MB). Free memory was 157.8 MB in the beginning and 191.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...