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_copy9_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:34:10,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:34:10,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:34:10,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:34:10,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:34:10,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:34:10,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:34:10,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:34:10,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:34:10,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:34:10,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:34:10,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:34:10,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:34:10,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:34:10,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:34:10,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:34:10,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:34:10,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:34:10,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:34:10,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:34:10,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:34:10,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:34:10,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:34:10,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:34:10,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:34:10,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:34:10,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:34:10,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:34:10,115 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 21:34:10,133 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:34:10,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:34:10,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:34:10,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:34:10,138 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:34:10,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:34:10,139 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:34:10,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:34:10,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:34:10,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:34:10,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:34:10,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:34:10,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:34:10,141 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:34:10,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:34:10,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:34:10,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:34:10,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:34:10,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:34:10,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:34:10,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:34:10,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:34:10,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:34:10,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:34:10,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:34:10,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:34:10,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:34:10,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:34:10,144 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 21:34:10,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:34:10,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:34:10,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:34:10,461 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:34:10,462 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:34:10,463 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i [2019-10-13 21:34:10,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3655b0b8b/7efca857af2e42fa93a8fee62a8ba2ff/FLAG35dbb3130 [2019-10-13 21:34:11,010 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:34:11,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i [2019-10-13 21:34:11,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3655b0b8b/7efca857af2e42fa93a8fee62a8ba2ff/FLAG35dbb3130 [2019-10-13 21:34:11,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3655b0b8b/7efca857af2e42fa93a8fee62a8ba2ff [2019-10-13 21:34:11,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:34:11,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:34:11,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:34:11,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:34:11,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:34:11,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b5c0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11, skipping insertion in model container [2019-10-13 21:34:11,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,413 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:34:11,433 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:34:11,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:34:11,660 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:34:11,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:34:11,787 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:34:11,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11 WrapperNode [2019-10-13 21:34:11,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:34:11,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:34:11,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:34:11,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:34:11,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (1/1) ... [2019-10-13 21:34:11,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:34:11,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:34:11,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:34:11,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:34:11,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (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 21:34:11,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:34:11,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:34:11,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:34:11,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:34:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:34:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:34:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:34:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:34:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:34:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:34:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:34:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:34:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:34:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:34:12,562 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:34:12,562 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-13 21:34:12,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:12 BoogieIcfgContainer [2019-10-13 21:34:12,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:34:12,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:34:12,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:34:12,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:34:12,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:34:11" (1/3) ... [2019-10-13 21:34:12,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a6efa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:12, skipping insertion in model container [2019-10-13 21:34:12,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:11" (2/3) ... [2019-10-13 21:34:12,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a6efa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:12, skipping insertion in model container [2019-10-13 21:34:12,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:12" (3/3) ... [2019-10-13 21:34:12,573 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-2.i [2019-10-13 21:34:12,583 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:34:12,591 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:34:12,603 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:34:12,635 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:34:12,635 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:34:12,635 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:34:12,635 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:34:12,636 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:34:12,636 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:34:12,636 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:34:12,636 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:34:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-13 21:34:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:34:12,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:12,674 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:12,677 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:12,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1608130408, now seen corresponding path program 1 times [2019-10-13 21:34:12,696 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:12,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533293674] [2019-10-13 21:34:12,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:12,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:12,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:12,930 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 21:34:12,931 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533293674] [2019-10-13 21:34:12,932 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:34:12,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:34:12,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889389729] [2019-10-13 21:34:12,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:34:12,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:12,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:34:12,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:34:12,954 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-10-13 21:34:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:12,990 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2019-10-13 21:34:12,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:34:12,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-13 21:34:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:13,000 INFO L225 Difference]: With dead ends: 49 [2019-10-13 21:34:13,001 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 21:34:13,004 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 21:34:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 21:34:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 21:34:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 21:34:13,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-10-13 21:34:13,045 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 20 [2019-10-13 21:34:13,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:13,046 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-10-13 21:34:13,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:34:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-10-13 21:34:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:34:13,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:13,047 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:13,048 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:13,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:13,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1792470151, now seen corresponding path program 1 times [2019-10-13 21:34:13,049 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:13,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538976805] [2019-10-13 21:34:13,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:13,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:13,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:34:13,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538976805] [2019-10-13 21:34:13,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:34:13,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:34:13,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430703306] [2019-10-13 21:34:13,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:34:13,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:13,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:34:13,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:34:13,114 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 3 states. [2019-10-13 21:34:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:13,190 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2019-10-13 21:34:13,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:34:13,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-13 21:34:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:13,193 INFO L225 Difference]: With dead ends: 51 [2019-10-13 21:34:13,193 INFO L226 Difference]: Without dead ends: 34 [2019-10-13 21:34:13,194 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 21:34:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-13 21:34:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-13 21:34:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 21:34:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2019-10-13 21:34:13,210 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 21 [2019-10-13 21:34:13,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:13,211 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2019-10-13 21:34:13,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:34:13,211 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2019-10-13 21:34:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 21:34:13,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:13,214 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:13,215 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:13,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1489973918, now seen corresponding path program 1 times [2019-10-13 21:34:13,216 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:13,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886957922] [2019-10-13 21:34:13,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:13,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:13,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:34:13,337 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886957922] [2019-10-13 21:34:13,337 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000929151] [2019-10-13 21:34:13,337 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 21:34:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:13,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:34:13,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:34:13,503 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:34:13,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222535904] [2019-10-13 21:34:13,559 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-13 21:34:13,560 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:13,567 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:13,575 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:13,575 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:13,730 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:14,316 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-10-13 21:34:14,685 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-10-13 21:34:14,996 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-10-13 21:34:16,094 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-10-13 21:34:16,422 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-10-13 21:34:16,701 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:34:16,714 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:16,723 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:16,723 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:16,724 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 475#(and (exists ((|v_main_~#a0~0.offset_BEFORE_CALL_1| Int) (v_prenex_4 Int) (|v_main_~#a1~0.base_BEFORE_CALL_1| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#a0~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_1))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_1|) |v_main_~#a1~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_1|) |v_main_~#a0~0.offset_BEFORE_CALL_1|)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:16,724 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 480#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a0~0.offset_BEFORE_CALL_1| Int) (v_prenex_4 Int) (|v_main_~#a1~0.base_BEFORE_CALL_1| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#a0~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_1))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_1|) |v_main_~#a1~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_1|) |v_main_~#a0~0.offset_BEFORE_CALL_1|)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:16,724 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 489#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:16,725 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 197#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,726 INFO L193 IcfgInterpreter]: Reachable states at location L16-3 satisfy 68#true [2019-10-13 21:34:16,726 INFO L193 IcfgInterpreter]: Reachable states at location L48-3 satisfy 460#(and (<= 100000 main_~a~0) (<= 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 21:34:16,726 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 369#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,726 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 240#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,727 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 21:34:16,727 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 21:34:16,727 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 494#(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 21:34:16,728 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 412#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,728 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 111#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,729 INFO L193 IcfgInterpreter]: Reachable states at location L49 satisfy 465#(and (<= 100000 main_~a~0) (< main_~x~0 100000) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |main_#t~mem21| (select (select |#memory_int| |main_~#a1~0.base|) (+ (* main_~x~0 4) |main_~#a1~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0) (= |main_#t~mem22| (select (select |#memory_int| |main_~#a0~0.base|) (+ (* main_~x~0 4) |main_~#a0~0.offset|)))) [2019-10-13 21:34:16,729 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:16,729 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 283#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,729 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 470#(exists ((|v_main_~#a0~0.offset_BEFORE_CALL_1| Int) (v_prenex_4 Int) (|v_main_~#a1~0.base_BEFORE_CALL_1| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#a0~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_1))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_1|) |v_main_~#a1~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_1|) |v_main_~#a0~0.offset_BEFORE_CALL_1|)))))) [2019-10-13 21:34:16,730 INFO L193 IcfgInterpreter]: Reachable states at location L44-3 satisfy 455#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,730 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 154#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,730 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 326#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:16,732 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 485#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a0~0.offset_BEFORE_CALL_1| Int) (v_prenex_4 Int) (|v_main_~#a1~0.base_BEFORE_CALL_1| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_1| Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#a0~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_3) (select (select |#memory_int| v_prenex_4) v_prenex_1))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_1|) |v_main_~#a1~0.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_1|) |v_main_~#a0~0.offset_BEFORE_CALL_1|)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:17,034 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:17,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 21:34:17,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767404156] [2019-10-13 21:34:17,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:34:17,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:17,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:34:17,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:34:17,039 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 17 states. [2019-10-13 21:34:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:17,740 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2019-10-13 21:34:17,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:34:17,742 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2019-10-13 21:34:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:17,743 INFO L225 Difference]: With dead ends: 73 [2019-10-13 21:34:17,743 INFO L226 Difference]: Without dead ends: 46 [2019-10-13 21:34:17,748 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:34:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-13 21:34:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2019-10-13 21:34:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 21:34:17,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-10-13 21:34:17,767 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 30 [2019-10-13 21:34:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:17,769 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-13 21:34:17,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:34:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-10-13 21:34:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 21:34:17,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:17,771 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:17,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:17,977 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:17,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1082535905, now seen corresponding path program 2 times [2019-10-13 21:34:17,978 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:17,978 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259375893] [2019-10-13 21:34:17,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:17,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:17,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:34:18,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259375893] [2019-10-13 21:34:18,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159761262] [2019-10-13 21:34:18,119 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 21:34:18,220 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:34:18,220 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:34:18,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:34:18,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:34:18,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:34:18,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693801517] [2019-10-13 21:34:18,274 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-13 21:34:18,275 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:18,275 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:18,275 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:18,276 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:18,319 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:18,825 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-10-13 21:34:20,194 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:34:20,201 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:20,204 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:20,204 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:20,205 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 475#(and (exists ((v_prenex_6 Int) (v_prenex_7 Int) (|v_main_~#a1~0.base_BEFORE_CALL_2| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_2| Int) (v_prenex_5 Int) (|v_main_~#a0~0.base_BEFORE_CALL_2| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_2|) |v_main_~#a1~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_2|) |v_main_~#a0~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_6) (select (select |#memory_int| v_prenex_7) v_prenex_8)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:20,205 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 480#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_6 Int) (v_prenex_7 Int) (|v_main_~#a1~0.base_BEFORE_CALL_2| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_2| Int) (v_prenex_5 Int) (|v_main_~#a0~0.base_BEFORE_CALL_2| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_2|) |v_main_~#a1~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_2|) |v_main_~#a0~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_6) (select (select |#memory_int| v_prenex_7) v_prenex_8)))))) (<= 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 21:34:20,205 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 489#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:20,205 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 197#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,205 INFO L193 IcfgInterpreter]: Reachable states at location L16-3 satisfy 68#true [2019-10-13 21:34:20,206 INFO L193 IcfgInterpreter]: Reachable states at location L48-3 satisfy 460#(and (<= 100000 main_~a~0) (<= 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 21:34:20,206 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 369#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,206 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 240#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,206 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 21:34:20,206 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 21:34:20,207 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 494#(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 21:34:20,207 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 412#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,207 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 111#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,207 INFO L193 IcfgInterpreter]: Reachable states at location L49 satisfy 465#(and (<= 100000 main_~a~0) (< main_~x~0 100000) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |main_#t~mem21| (select (select |#memory_int| |main_~#a1~0.base|) (+ (* main_~x~0 4) |main_~#a1~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0) (= |main_#t~mem22| (select (select |#memory_int| |main_~#a0~0.base|) (+ (* main_~x~0 4) |main_~#a0~0.offset|)))) [2019-10-13 21:34:20,207 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:20,208 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 283#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,208 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 470#(exists ((v_prenex_6 Int) (v_prenex_7 Int) (|v_main_~#a1~0.base_BEFORE_CALL_2| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_2| Int) (v_prenex_5 Int) (|v_main_~#a0~0.base_BEFORE_CALL_2| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_2|) |v_main_~#a1~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_2|) |v_main_~#a0~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_6) (select (select |#memory_int| v_prenex_7) v_prenex_8)))))) [2019-10-13 21:34:20,208 INFO L193 IcfgInterpreter]: Reachable states at location L44-3 satisfy 455#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,208 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 154#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,208 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 326#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:20,209 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 485#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_6 Int) (v_prenex_7 Int) (|v_main_~#a1~0.base_BEFORE_CALL_2| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_2| Int) (v_prenex_5 Int) (|v_main_~#a0~0.base_BEFORE_CALL_2| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_2| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_2|) |v_main_~#a1~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_2|) |v_main_~#a0~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_6) (select (select |#memory_int| v_prenex_7) v_prenex_8)))))) (<= 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 21:34:20,516 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:20,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4, 11] total 21 [2019-10-13 21:34:20,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927490937] [2019-10-13 21:34:20,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-13 21:34:20,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-13 21:34:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:34:20,520 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 21 states. [2019-10-13 21:34:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:21,704 INFO L93 Difference]: Finished difference Result 101 states and 148 transitions. [2019-10-13 21:34:21,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 21:34:21,704 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 33 [2019-10-13 21:34:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:21,706 INFO L225 Difference]: With dead ends: 101 [2019-10-13 21:34:21,706 INFO L226 Difference]: Without dead ends: 74 [2019-10-13 21:34:21,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:34:21,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-13 21:34:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2019-10-13 21:34:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-13 21:34:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-10-13 21:34:21,733 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 33 [2019-10-13 21:34:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:21,733 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-10-13 21:34:21,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-13 21:34:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2019-10-13 21:34:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 21:34:21,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:21,739 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:21,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:21,946 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:21,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:21,947 INFO L82 PathProgramCache]: Analyzing trace with hash -555202041, now seen corresponding path program 3 times [2019-10-13 21:34:21,947 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:21,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272742744] [2019-10-13 21:34:21,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:21,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:21,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 21:34:22,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272742744] [2019-10-13 21:34:22,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588130514] [2019-10-13 21:34:22,120 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 21:34:22,237 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:34:22,238 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:34:22,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:34:22,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 21:34:22,257 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 21:34:22,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [88254635] [2019-10-13 21:34:22,328 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-13 21:34:22,328 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:22,329 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:22,329 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:22,329 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:22,349 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:22,627 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-10-13 21:34:24,215 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:34:24,222 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:24,225 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:24,225 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:24,226 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 475#(and (exists ((|v_main_~#a1~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#a0~0.base_BEFORE_CALL_3| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_3|) |v_main_~#a1~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_3|) |v_main_~#a0~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_9) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:24,226 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 480#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a1~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#a0~0.base_BEFORE_CALL_3| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_3|) |v_main_~#a1~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_3|) |v_main_~#a0~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_9) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:24,226 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 489#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:24,226 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 197#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,227 INFO L193 IcfgInterpreter]: Reachable states at location L48-3 satisfy 460#(and (<= 100000 main_~a~0) (<= 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 21:34:24,227 INFO L193 IcfgInterpreter]: Reachable states at location L16-3 satisfy 68#true [2019-10-13 21:34:24,227 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 369#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,227 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 240#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,227 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 21:34:24,227 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 21:34:24,228 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 494#(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 21:34:24,228 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 412#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,228 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 111#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,228 INFO L193 IcfgInterpreter]: Reachable states at location L49 satisfy 465#(and (<= 100000 main_~a~0) (< main_~x~0 100000) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |main_#t~mem21| (select (select |#memory_int| |main_~#a1~0.base|) (+ (* main_~x~0 4) |main_~#a1~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0) (= |main_#t~mem22| (select (select |#memory_int| |main_~#a0~0.base|) (+ (* main_~x~0 4) |main_~#a0~0.offset|)))) [2019-10-13 21:34:24,228 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:24,228 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 283#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,229 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 470#(exists ((|v_main_~#a1~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#a0~0.base_BEFORE_CALL_3| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_3|) |v_main_~#a1~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_3|) |v_main_~#a0~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_9) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)))))) [2019-10-13 21:34:24,229 INFO L193 IcfgInterpreter]: Reachable states at location L44-3 satisfy 455#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,229 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 154#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,229 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 485#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a1~0.base_BEFORE_CALL_3| Int) (v_prenex_12 Int) (v_prenex_11 Int) (v_prenex_10 Int) (|v_main_~#a0~0.base_BEFORE_CALL_3| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_3| Int) (v_prenex_9 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_3|) |v_main_~#a1~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_3|) |v_main_~#a0~0.offset_BEFORE_CALL_3|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_9) v_prenex_11) (select (select |#memory_int| v_prenex_10) v_prenex_12)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:24,229 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 326#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:24,505 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:24,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 25 [2019-10-13 21:34:24,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786246387] [2019-10-13 21:34:24,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-13 21:34:24,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:24,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-13 21:34:24,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:34:24,508 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 25 states. [2019-10-13 21:34:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:25,467 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2019-10-13 21:34:25,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 21:34:25,468 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 61 [2019-10-13 21:34:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:25,470 INFO L225 Difference]: With dead ends: 135 [2019-10-13 21:34:25,470 INFO L226 Difference]: Without dead ends: 81 [2019-10-13 21:34:25,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=369, Invalid=1523, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 21:34:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-10-13 21:34:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2019-10-13 21:34:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-13 21:34:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2019-10-13 21:34:25,482 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 61 [2019-10-13 21:34:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:25,482 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2019-10-13 21:34:25,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-13 21:34:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2019-10-13 21:34:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-13 21:34:25,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:25,484 INFO L380 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:25,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:25,696 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1224243352, now seen corresponding path program 4 times [2019-10-13 21:34:25,697 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:25,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060660064] [2019-10-13 21:34:25,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:25,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:25,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 21:34:25,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060660064] [2019-10-13 21:34:25,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516374951] [2019-10-13 21:34:25,979 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 21:34:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:26,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 21:34:26,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 21:34:26,147 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 21:34:26,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1239344584] [2019-10-13 21:34:26,361 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-13 21:34:26,361 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:26,362 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:26,362 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:26,362 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:26,385 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:28,230 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:34:28,240 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:28,243 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:28,243 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:28,243 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 475#(and (exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#a1~0.base_BEFORE_CALL_4| Int) (|v_main_~#a0~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_4| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_14) v_prenex_15) (select (select |#memory_int| v_prenex_13) v_prenex_16)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_4|) |v_main_~#a0~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_4|) |v_main_~#a1~0.offset_BEFORE_CALL_4|))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:28,243 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 480#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#a1~0.base_BEFORE_CALL_4| Int) (|v_main_~#a0~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_4| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_14) v_prenex_15) (select (select |#memory_int| v_prenex_13) v_prenex_16)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_4|) |v_main_~#a0~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_4|) |v_main_~#a1~0.offset_BEFORE_CALL_4|))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:28,244 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 489#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:28,244 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 197#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,244 INFO L193 IcfgInterpreter]: Reachable states at location L48-3 satisfy 460#(and (<= 100000 main_~a~0) (<= 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 21:34:28,244 INFO L193 IcfgInterpreter]: Reachable states at location L16-3 satisfy 68#true [2019-10-13 21:34:28,244 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 369#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,245 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 240#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,245 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 21:34:28,245 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 21:34:28,245 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 494#(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 21:34:28,245 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 412#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,246 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 111#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,246 INFO L193 IcfgInterpreter]: Reachable states at location L49 satisfy 465#(and (<= 100000 main_~a~0) (< main_~x~0 100000) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |main_#t~mem21| (select (select |#memory_int| |main_~#a1~0.base|) (+ (* main_~x~0 4) |main_~#a1~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0) (= |main_#t~mem22| (select (select |#memory_int| |main_~#a0~0.base|) (+ (* main_~x~0 4) |main_~#a0~0.offset|)))) [2019-10-13 21:34:28,246 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:28,246 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 283#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,246 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 470#(exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#a1~0.base_BEFORE_CALL_4| Int) (|v_main_~#a0~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_4| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_14) v_prenex_15) (select (select |#memory_int| v_prenex_13) v_prenex_16)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_4|) |v_main_~#a0~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_4|) |v_main_~#a1~0.offset_BEFORE_CALL_4|))))) [2019-10-13 21:34:28,246 INFO L193 IcfgInterpreter]: Reachable states at location L44-3 satisfy 455#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,247 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 154#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,247 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 485#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_16 Int) (v_prenex_15 Int) (|v_main_~#a1~0.base_BEFORE_CALL_4| Int) (|v_main_~#a0~0.base_BEFORE_CALL_4| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_4| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_4| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_14) v_prenex_15) (select (select |#memory_int| v_prenex_13) v_prenex_16)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_4|) |v_main_~#a0~0.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_4|) |v_main_~#a1~0.offset_BEFORE_CALL_4|))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:28,247 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 326#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:28,559 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:28,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 11] total 39 [2019-10-13 21:34:28,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620521070] [2019-10-13 21:34:28,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-10-13 21:34:28,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:28,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-10-13 21:34:28,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1047, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:34:28,563 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 39 states. [2019-10-13 21:34:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:29,948 INFO L93 Difference]: Finished difference Result 149 states and 182 transitions. [2019-10-13 21:34:29,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-10-13 21:34:29,948 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 68 [2019-10-13 21:34:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:29,950 INFO L225 Difference]: With dead ends: 149 [2019-10-13 21:34:29,950 INFO L226 Difference]: Without dead ends: 95 [2019-10-13 21:34:29,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1244, Invalid=3868, Unknown=0, NotChecked=0, Total=5112 [2019-10-13 21:34:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-10-13 21:34:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2019-10-13 21:34:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-13 21:34:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2019-10-13 21:34:29,966 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 68 [2019-10-13 21:34:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:29,966 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2019-10-13 21:34:29,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-10-13 21:34:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2019-10-13 21:34:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 21:34:29,988 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:29,989 INFO L380 BasicCegarLoop]: trace histogram [26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:30,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:30,193 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:30,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:30,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1549757064, now seen corresponding path program 5 times [2019-10-13 21:34:30,194 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:30,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185247697] [2019-10-13 21:34:30,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:30,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:30,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 21:34:30,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185247697] [2019-10-13 21:34:30,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847328848] [2019-10-13 21:34:30,656 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 [2019-10-13 21:34:30,966 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:34:30,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:34:30,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:34:30,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2019-10-13 21:34:31,071 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2019-10-13 21:34:31,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [583783221] [2019-10-13 21:34:31,172 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-13 21:34:31,172 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:31,172 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:31,173 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:31,173 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:31,187 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:32,971 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:34:32,978 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:32,983 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:32,983 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:32,983 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 475#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a0~0.base_BEFORE_CALL_5| Int) (v_prenex_20 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_5| Int) (v_prenex_19 Int) (|v_main_~#a1~0.base_BEFORE_CALL_5| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_5| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_5|) |v_main_~#a0~0.offset_BEFORE_CALL_5|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_5|) |v_main_~#a1~0.offset_BEFORE_CALL_5|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_17) v_prenex_18) (select (select |#memory_int| v_prenex_19) v_prenex_20))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:32,983 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 480#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a0~0.base_BEFORE_CALL_5| Int) (v_prenex_20 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_5| Int) (v_prenex_19 Int) (|v_main_~#a1~0.base_BEFORE_CALL_5| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_5| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_5|) |v_main_~#a0~0.offset_BEFORE_CALL_5|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_5|) |v_main_~#a1~0.offset_BEFORE_CALL_5|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_17) v_prenex_18) (select (select |#memory_int| v_prenex_19) v_prenex_20))))) (<= __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 21:34:32,984 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 489#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:32,984 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 197#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,984 INFO L193 IcfgInterpreter]: Reachable states at location L48-3 satisfy 460#(and (<= 100000 main_~a~0) (<= 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 21:34:32,984 INFO L193 IcfgInterpreter]: Reachable states at location L16-3 satisfy 68#true [2019-10-13 21:34:32,984 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 369#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,984 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 240#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,985 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 21:34:32,985 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0))) [2019-10-13 21:34:32,985 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 494#(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 21:34:32,985 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 412#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,985 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 111#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,986 INFO L193 IcfgInterpreter]: Reachable states at location L49 satisfy 465#(and (<= 100000 main_~a~0) (< main_~x~0 100000) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |main_#t~mem21| (select (select |#memory_int| |main_~#a1~0.base|) (+ (* main_~x~0 4) |main_~#a1~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0) (= |main_#t~mem22| (select (select |#memory_int| |main_~#a0~0.base|) (+ (* main_~x~0 4) |main_~#a0~0.offset|)))) [2019-10-13 21:34:32,986 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:32,986 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 283#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,986 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 470#(exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a0~0.base_BEFORE_CALL_5| Int) (v_prenex_20 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_5| Int) (v_prenex_19 Int) (|v_main_~#a1~0.base_BEFORE_CALL_5| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_5| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_5|) |v_main_~#a0~0.offset_BEFORE_CALL_5|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_5|) |v_main_~#a1~0.offset_BEFORE_CALL_5|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_17) v_prenex_18) (select (select |#memory_int| v_prenex_19) v_prenex_20))))) [2019-10-13 21:34:32,986 INFO L193 IcfgInterpreter]: Reachable states at location L44-3 satisfy 455#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,986 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 154#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:32,986 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 485#(and (exists ((v_prenex_18 Int) (v_prenex_17 Int) (|v_main_~#a0~0.base_BEFORE_CALL_5| Int) (v_prenex_20 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_5| Int) (v_prenex_19 Int) (|v_main_~#a1~0.base_BEFORE_CALL_5| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_5| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_5|) |v_main_~#a0~0.offset_BEFORE_CALL_5|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_5|) |v_main_~#a1~0.offset_BEFORE_CALL_5|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_17) v_prenex_18) (select (select |#memory_int| v_prenex_19) v_prenex_20))))) (<= __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 21:34:32,987 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 326#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:33,440 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:33,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 7, 7, 11] total 49 [2019-10-13 21:34:33,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569615429] [2019-10-13 21:34:33,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-10-13 21:34:33,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:33,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-10-13 21:34:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1852, Unknown=0, NotChecked=0, Total=2352 [2019-10-13 21:34:33,445 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 49 states. [2019-10-13 21:34:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:36,166 INFO L93 Difference]: Finished difference Result 204 states and 278 transitions. [2019-10-13 21:34:36,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-10-13 21:34:36,166 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 82 [2019-10-13 21:34:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:36,167 INFO L225 Difference]: With dead ends: 204 [2019-10-13 21:34:36,167 INFO L226 Difference]: Without dead ends: 150 [2019-10-13 21:34:36,170 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1514, Invalid=7042, Unknown=0, NotChecked=0, Total=8556 [2019-10-13 21:34:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-10-13 21:34:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2019-10-13 21:34:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 21:34:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2019-10-13 21:34:36,188 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 82 [2019-10-13 21:34:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:36,188 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 151 transitions. [2019-10-13 21:34:36,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-10-13 21:34:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 151 transitions. [2019-10-13 21:34:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 21:34:36,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:36,191 INFO L380 BasicCegarLoop]: trace histogram [27, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:36,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:36,401 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1276829511, now seen corresponding path program 6 times [2019-10-13 21:34:36,402 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:36,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22393917] [2019-10-13 21:34:36,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:36,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:36,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-10-13 21:34:36,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22393917] [2019-10-13 21:34:36,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747875627] [2019-10-13 21:34:36,927 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:37,185 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:34:37,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:34:37,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 21:34:37,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-10-13 21:34:37,216 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-10-13 21:34:38,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115432649] [2019-10-13 21:34:38,090 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-13 21:34:38,091 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:38,091 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:38,091 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:38,092 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:38,111 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:39,913 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:34:39,918 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:39,924 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:39,924 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:39,924 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 475#(and (exists ((v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#a0~0.base_BEFORE_CALL_6| Int) (v_prenex_24 Int) (v_prenex_21 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_6| Int) (|v_main_~#a1~0.base_BEFORE_CALL_6| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_6| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_23) v_prenex_24) (select (select |#memory_int| v_prenex_21) v_prenex_22))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_6|) |v_main_~#a1~0.offset_BEFORE_CALL_6|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_6|) |v_main_~#a0~0.offset_BEFORE_CALL_6|)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:39,925 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 480#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#a0~0.base_BEFORE_CALL_6| Int) (v_prenex_24 Int) (v_prenex_21 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_6| Int) (|v_main_~#a1~0.base_BEFORE_CALL_6| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_6| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_23) v_prenex_24) (select (select |#memory_int| v_prenex_21) v_prenex_22))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_6|) |v_main_~#a1~0.offset_BEFORE_CALL_6|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_6|) |v_main_~#a0~0.offset_BEFORE_CALL_6|)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:39,925 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 489#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:39,925 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 197#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,925 INFO L193 IcfgInterpreter]: Reachable states at location L16-3 satisfy 68#true [2019-10-13 21:34:39,925 INFO L193 IcfgInterpreter]: Reachable states at location L48-3 satisfy 460#(and (<= 100000 main_~a~0) (<= 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 21:34:39,926 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 369#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,926 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 240#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,926 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 21:34:39,926 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 21:34:39,926 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 412#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,927 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 494#(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 21:34:39,927 INFO L193 IcfgInterpreter]: Reachable states at location L49 satisfy 465#(and (<= 100000 main_~a~0) (< main_~x~0 100000) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |main_#t~mem21| (select (select |#memory_int| |main_~#a1~0.base|) (+ (* main_~x~0 4) |main_~#a1~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0) (= |main_#t~mem22| (select (select |#memory_int| |main_~#a0~0.base|) (+ (* main_~x~0 4) |main_~#a0~0.offset|)))) [2019-10-13 21:34:39,927 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 111#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,927 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:39,927 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 283#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,928 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 470#(exists ((v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#a0~0.base_BEFORE_CALL_6| Int) (v_prenex_24 Int) (v_prenex_21 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_6| Int) (|v_main_~#a1~0.base_BEFORE_CALL_6| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_6| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_23) v_prenex_24) (select (select |#memory_int| v_prenex_21) v_prenex_22))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_6|) |v_main_~#a1~0.offset_BEFORE_CALL_6|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_6|) |v_main_~#a0~0.offset_BEFORE_CALL_6|)))))) [2019-10-13 21:34:39,928 INFO L193 IcfgInterpreter]: Reachable states at location L44-3 satisfy 455#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,928 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 154#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:39,928 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 485#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#a0~0.base_BEFORE_CALL_6| Int) (v_prenex_24 Int) (v_prenex_21 Int) (|v_main_~#a0~0.offset_BEFORE_CALL_6| Int) (|v_main_~#a1~0.base_BEFORE_CALL_6| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_6| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_23) v_prenex_24) (select (select |#memory_int| v_prenex_21) v_prenex_22))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_6|) |v_main_~#a1~0.offset_BEFORE_CALL_6|) (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_6|) |v_main_~#a0~0.offset_BEFORE_CALL_6|)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:39,928 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 326#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:40,324 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:34:40,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30, 11] total 69 [2019-10-13 21:34:40,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46977366] [2019-10-13 21:34:40,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 69 states [2019-10-13 21:34:40,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:34:40,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2019-10-13 21:34:40,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1740, Invalid=2952, Unknown=0, NotChecked=0, Total=4692 [2019-10-13 21:34:40,329 INFO L87 Difference]: Start difference. First operand 141 states and 151 transitions. Second operand 69 states. [2019-10-13 21:34:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:34:43,751 INFO L93 Difference]: Finished difference Result 287 states and 335 transitions. [2019-10-13 21:34:43,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2019-10-13 21:34:43,752 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 137 [2019-10-13 21:34:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:34:43,754 INFO L225 Difference]: With dead ends: 287 [2019-10-13 21:34:43,755 INFO L226 Difference]: Without dead ends: 179 [2019-10-13 21:34:43,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5099, Invalid=12193, Unknown=0, NotChecked=0, Total=17292 [2019-10-13 21:34:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-10-13 21:34:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 170. [2019-10-13 21:34:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2019-10-13 21:34:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions. [2019-10-13 21:34:43,779 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 137 [2019-10-13 21:34:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:34:43,780 INFO L462 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions. [2019-10-13 21:34:43,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 69 states. [2019-10-13 21:34:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions. [2019-10-13 21:34:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:34:43,783 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:34:43,783 INFO L380 BasicCegarLoop]: trace histogram [56, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:34:43,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:43,988 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:34:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:34:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1152654792, now seen corresponding path program 7 times [2019-10-13 21:34:43,989 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:34:43,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006521505] [2019-10-13 21:34:43,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:43,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:34:43,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:34:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2091 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-10-13 21:34:45,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006521505] [2019-10-13 21:34:45,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830122419] [2019-10-13 21:34:45,396 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:34:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:34:45,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 58 conjunts are in the unsatisfiable core [2019-10-13 21:34:45,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:34:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2091 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-10-13 21:34:45,731 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:34:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2091 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-10-13 21:34:49,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [680509929] [2019-10-13 21:34:49,284 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-13 21:34:49,285 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:34:49,285 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:34:49,285 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:34:49,286 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:34:49,308 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:34:51,059 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-10-13 21:34:51,125 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:34:51,130 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:34:51,132 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:34:51,132 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:34:51,132 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 475#(and (exists ((v_prenex_27 Int) (v_prenex_26 Int) (v_prenex_28 Int) (v_prenex_25 Int) (|v_main_~#a0~0.base_BEFORE_CALL_7| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a1~0.base_BEFORE_CALL_7| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_25) v_prenex_27) (select (select |#memory_int| v_prenex_28) v_prenex_26)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_7|) |v_main_~#a0~0.offset_BEFORE_CALL_7|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_7|) |v_main_~#a1~0.offset_BEFORE_CALL_7|))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:51,132 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 480#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_27 Int) (v_prenex_26 Int) (v_prenex_28 Int) (v_prenex_25 Int) (|v_main_~#a0~0.base_BEFORE_CALL_7| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a1~0.base_BEFORE_CALL_7| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_25) v_prenex_27) (select (select |#memory_int| v_prenex_28) v_prenex_26)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_7|) |v_main_~#a0~0.offset_BEFORE_CALL_7|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_7|) |v_main_~#a1~0.offset_BEFORE_CALL_7|))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:51,132 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 489#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:34:51,133 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 197#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,133 INFO L193 IcfgInterpreter]: Reachable states at location L16-3 satisfy 68#true [2019-10-13 21:34:51,133 INFO L193 IcfgInterpreter]: Reachable states at location L48-3 satisfy 460#(and (<= 100000 main_~a~0) (<= 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 21:34:51,133 INFO L193 IcfgInterpreter]: Reachable states at location L38-3 satisfy 369#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,133 INFO L193 IcfgInterpreter]: Reachable states at location L29-3 satisfy 240#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,133 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 21:34:51,133 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 21:34:51,133 INFO L193 IcfgInterpreter]: Reachable states at location L41-3 satisfy 412#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,134 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 494#(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 21:34:51,134 INFO L193 IcfgInterpreter]: Reachable states at location L49 satisfy 465#(and (<= 100000 main_~a~0) (< main_~x~0 100000) (<= 0 main_~i~0) (= main_~x~0 0) (<= 100000 main_~i~0) (= |main_#t~mem21| (select (select |#memory_int| |main_~#a1~0.base|) (+ (* main_~x~0 4) |main_~#a1~0.offset|))) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0) (= |main_#t~mem22| (select (select |#memory_int| |main_~#a0~0.base|) (+ (* main_~x~0 4) |main_~#a0~0.offset|)))) [2019-10-13 21:34:51,134 INFO L193 IcfgInterpreter]: Reachable states at location L20-3 satisfy 111#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,134 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:34:51,134 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 283#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,135 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 470#(exists ((v_prenex_27 Int) (v_prenex_26 Int) (v_prenex_28 Int) (v_prenex_25 Int) (|v_main_~#a0~0.base_BEFORE_CALL_7| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a1~0.base_BEFORE_CALL_7| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_25) v_prenex_27) (select (select |#memory_int| v_prenex_28) v_prenex_26)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_7|) |v_main_~#a0~0.offset_BEFORE_CALL_7|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_7|) |v_main_~#a1~0.offset_BEFORE_CALL_7|))))) [2019-10-13 21:34:51,135 INFO L193 IcfgInterpreter]: Reachable states at location L44-3 satisfy 455#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,135 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 154#(and (<= 100000 main_~a~0) (<= 0 main_~i~0)) [2019-10-13 21:34:51,135 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 485#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_27 Int) (v_prenex_26 Int) (v_prenex_28 Int) (v_prenex_25 Int) (|v_main_~#a0~0.base_BEFORE_CALL_7| Int) (|v_main_~#a1~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a0~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a1~0.base_BEFORE_CALL_7| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_25) v_prenex_27) (select (select |#memory_int| v_prenex_28) v_prenex_26)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#a0~0.base_BEFORE_CALL_7|) |v_main_~#a0~0.offset_BEFORE_CALL_7|) (select (select |#memory_int| |v_main_~#a1~0.base_BEFORE_CALL_7|) |v_main_~#a1~0.offset_BEFORE_CALL_7|))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:34:51,135 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 326#(and (<= 100000 main_~a~0) (<= 0 main_~i~0))