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-multidimensional/init-non-constant-3-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:38:02,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:38:02,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:38:02,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:38:02,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:38:02,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:38:02,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:38:02,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:38:02,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:38:02,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:38:02,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:38:02,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:38:02,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:38:02,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:38:02,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:38:02,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:38:02,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:38:02,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:38:02,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:38:02,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:38:02,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:38:02,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:38:02,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:38:02,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:38:02,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:38:02,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:38:02,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:38:02,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:38:02,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:38:02,664 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:38:02,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:38:02,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:38:02,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:38:02,667 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:38:02,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:38:02,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:38:02,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:38:02,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:38:02,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:38:02,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:38:02,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:38:02,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:38:02,669 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:38:02,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:38:02,669 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:38:02,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:38:02,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:38:02,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:38:02,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:38:02,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:38:02,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:38:02,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:38:02,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:38:02,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:38:02,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:38:02,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:38:02,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:38:02,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:38:02,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:38:02,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:38:02,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:38:02,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:38:02,979 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:38:02,980 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c [2019-10-13 21:38:03,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865edb198/f60971d2621b4e8fb3133ea4529260af/FLAGf6d694db6 [2019-10-13 21:38:03,547 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:38:03,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c [2019-10-13 21:38:03,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865edb198/f60971d2621b4e8fb3133ea4529260af/FLAGf6d694db6 [2019-10-13 21:38:03,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865edb198/f60971d2621b4e8fb3133ea4529260af [2019-10-13 21:38:03,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:38:03,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:38:03,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:03,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:38:03,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:38:03,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:03" (1/1) ... [2019-10-13 21:38:03,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c66bfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:03, skipping insertion in model container [2019-10-13 21:38:03,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:03" (1/1) ... [2019-10-13 21:38:03,924 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:38:03,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:38:04,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:04,229 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:38:04,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:04,424 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:38:04,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04 WrapperNode [2019-10-13 21:38:04,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:04,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:38:04,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:38:04,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:38:04,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... [2019-10-13 21:38:04,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... [2019-10-13 21:38:04,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... [2019-10-13 21:38:04,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... [2019-10-13 21:38:04,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... [2019-10-13 21:38:04,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... [2019-10-13 21:38:04,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... [2019-10-13 21:38:04,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:38:04,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:38:04,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:38:04,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:38:04,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:38:04,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:38:04,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:38:04,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:38:04,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:38:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:38:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:38:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:38:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:38:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:38:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:38:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:38:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:38:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:38:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:38:04,960 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:38:04,960 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-13 21:38:04,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:04 BoogieIcfgContainer [2019-10-13 21:38:04,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:38:04,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:38:04,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:38:04,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:38:04,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:03" (1/3) ... [2019-10-13 21:38:04,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a753e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:04, skipping insertion in model container [2019-10-13 21:38:04,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:04" (2/3) ... [2019-10-13 21:38:04,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a753e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:04, skipping insertion in model container [2019-10-13 21:38:04,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:04" (3/3) ... [2019-10-13 21:38:04,970 INFO L109 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2019-10-13 21:38:04,979 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:38:04,987 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:38:05,000 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:38:05,023 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:38:05,023 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:38:05,023 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:38:05,024 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:38:05,024 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:38:05,024 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:38:05,024 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:38:05,024 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:38:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-13 21:38:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:38:05,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:05,045 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:05,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash 304177849, now seen corresponding path program 1 times [2019-10-13 21:38:05,060 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:05,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611647776] [2019-10-13 21:38:05,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:05,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:05,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:05,147 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:05,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521346105] [2019-10-13 21:38:05,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:05,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:05,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:05,296 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:05,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611647776] [2019-10-13 21:38:05,323 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:05,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521346105] [2019-10-13 21:38:05,324 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:05,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 21:38:05,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647877138] [2019-10-13 21:38:05,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:38:05,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:05,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:38:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:38:05,345 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-10-13 21:38:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:05,449 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2019-10-13 21:38:05,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:38:05,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 21:38:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:05,469 INFO L225 Difference]: With dead ends: 40 [2019-10-13 21:38:05,469 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 21:38:05,475 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:38:05,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 21:38:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-13 21:38:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 21:38:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-10-13 21:38:05,531 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2019-10-13 21:38:05,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:05,532 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-10-13 21:38:05,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:38:05,533 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2019-10-13 21:38:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:38:05,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:05,534 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:05,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:05,739 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:05,740 INFO L82 PathProgramCache]: Analyzing trace with hash 362677943, now seen corresponding path program 1 times [2019-10-13 21:38:05,741 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:05,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727788605] [2019-10-13 21:38:05,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:05,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:05,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:05,758 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:05,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067712236] [2019-10-13 21:38:05,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:05,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:05,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:38:05,828 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:38:05,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727788605] [2019-10-13 21:38:05,856 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:05,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067712236] [2019-10-13 21:38:05,856 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:05,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:38:05,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277926535] [2019-10-13 21:38:05,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:38:05,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:38:05,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:38:05,860 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 6 states. [2019-10-13 21:38:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:05,976 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2019-10-13 21:38:05,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:38:05,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-10-13 21:38:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:05,980 INFO L225 Difference]: With dead ends: 50 [2019-10-13 21:38:05,981 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 21:38:05,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:38:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 21:38:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-10-13 21:38:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 21:38:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-10-13 21:38:05,996 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 17 [2019-10-13 21:38:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:05,997 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-10-13 21:38:05,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:38:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2019-10-13 21:38:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 21:38:05,998 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:05,999 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:06,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:06,204 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:06,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash 421607751, now seen corresponding path program 1 times [2019-10-13 21:38:06,205 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:06,206 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750424981] [2019-10-13 21:38:06,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:06,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:06,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:06,217 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:06,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239572518] [2019-10-13 21:38:06,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:06,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:06,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:38:06,316 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:38:06,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750424981] [2019-10-13 21:38:06,363 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:06,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239572518] [2019-10-13 21:38:06,364 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:06,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:38:06,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192163668] [2019-10-13 21:38:06,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:38:06,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:06,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:38:06,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:38:06,368 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 6 states. [2019-10-13 21:38:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:06,500 INFO L93 Difference]: Finished difference Result 77 states and 112 transitions. [2019-10-13 21:38:06,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:38:06,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-13 21:38:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:06,502 INFO L225 Difference]: With dead ends: 77 [2019-10-13 21:38:06,502 INFO L226 Difference]: Without dead ends: 51 [2019-10-13 21:38:06,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:38:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-13 21:38:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-10-13 21:38:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-13 21:38:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2019-10-13 21:38:06,516 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 25 [2019-10-13 21:38:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:06,517 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2019-10-13 21:38:06,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:38:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2019-10-13 21:38:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 21:38:06,518 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:06,518 INFO L380 BasicCegarLoop]: trace histogram [8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:06,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:06,723 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:06,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2016507335, now seen corresponding path program 1 times [2019-10-13 21:38:06,724 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:06,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686587154] [2019-10-13 21:38:06,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:06,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:06,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:06,736 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:06,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814071255] [2019-10-13 21:38:06,736 INFO L94 rtionOrderModulation]: Keeping assertion order 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 21:38:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:06,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:38:06,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 21:38:06,848 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 21:38:06,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686587154] [2019-10-13 21:38:06,904 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:06,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814071255] [2019-10-13 21:38:06,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [334656185] [2019-10-13 21:38:06,954 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 21:38:06,955 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:06,963 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:06,972 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:06,974 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:07,237 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:38:09,188 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-13 21:38:09,204 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:38:09,207 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:38:09,208 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:38:09,208 INFO L193 IcfgInterpreter]: Reachable states at location L45-2 satisfy 458#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:09,209 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 488#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (v_main_~C~0_BEFORE_CALL_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) 0) 4294967296) (mod v_prenex_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_1 4294967296))))) (<= __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 21:38:09,209 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 448#(and (or (<= 1000 main_~k~0) (and (<= 0 main_~j~0) (<= main_~k~0 0) (<= main_~j~0 0))) (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1 main_~j~0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~k~0 main_~n~0)) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) (and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (<= main_~n~0 1000)))) [2019-10-13 21:38:09,209 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 492#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:38:09,209 INFO L193 IcfgInterpreter]: Reachable states at location L47-2 satisfy 463#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:09,210 INFO L193 IcfgInterpreter]: Reachable states at location L27-2 satisfy 443#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:09,210 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 478#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (v_main_~C~0_BEFORE_CALL_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) 0) 4294967296) (mod v_prenex_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_1 4294967296))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:09,210 INFO L193 IcfgInterpreter]: Reachable states at location L48 satisfy 468#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (= main_~n~0 1000) (< main_~k~0 main_~n~0) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~k~0 4) (* main_~i~0 (* (* main_~n~0 4) main_~n~0)) (* main_~j~0 (* main_~n~0 4)) |main_~#A~0.offset|)) |main_#t~mem1|) (<= 1000 main_~n~0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:09,211 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 21:38:09,211 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 21:38:09,211 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 497#(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 21:38:09,211 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:38:09,212 INFO L193 IcfgInterpreter]: Reachable states at location L42-2 satisfy 453#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:09,212 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 483#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (v_main_~C~0_BEFORE_CALL_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) 0) 4294967296) (mod v_prenex_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_1 4294967296))))) (<= __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 21:38:09,212 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 473#(exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int) (v_main_~C~0_BEFORE_CALL_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| v_prenex_1) 0) 4294967296) (mod v_prenex_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_1 4294967296))))) [2019-10-13 21:38:09,213 INFO L193 IcfgInterpreter]: Reachable states at location L22-2 satisfy 342#(and (or (and (= 0 |#NULL.base|) (= |#length| (store |old(#length)| |main_~#A~0.base| (* (* (* main_~n~0 4) main_~n~0) main_~n~0))) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= main_~n~0 1000) (= |#valid| (store |old(#valid)| |main_~#A~0.base| 1)) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (= main_~n~0 1000) (= |#NULL.offset| 0))) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:09,667 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-10-13 21:38:10,012 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:38:10,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 12] total 22 [2019-10-13 21:38:10,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165669338] [2019-10-13 21:38:10,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 21:38:10,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:10,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 21:38:10,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:38:10,016 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 22 states. [2019-10-13 21:38:11,570 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-10-13 21:38:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:11,886 INFO L93 Difference]: Finished difference Result 135 states and 193 transitions. [2019-10-13 21:38:11,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 21:38:11,887 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 33 [2019-10-13 21:38:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:11,892 INFO L225 Difference]: With dead ends: 135 [2019-10-13 21:38:11,892 INFO L226 Difference]: Without dead ends: 95 [2019-10-13 21:38:11,894 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:38:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-10-13 21:38:11,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2019-10-13 21:38:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-10-13 21:38:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2019-10-13 21:38:11,925 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 33 [2019-10-13 21:38:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:11,926 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2019-10-13 21:38:11,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 21:38:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2019-10-13 21:38:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 21:38:11,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:11,928 INFO L380 BasicCegarLoop]: trace histogram [24, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:12,131 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:12,132 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:12,133 INFO L82 PathProgramCache]: Analyzing trace with hash -130175289, now seen corresponding path program 2 times [2019-10-13 21:38:12,134 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:12,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984716903] [2019-10-13 21:38:12,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:12,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:12,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:12,153 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:12,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505460448] [2019-10-13 21:38:12,154 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 21:38:12,411 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-10-13 21:38:12,411 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:38:12,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 21:38:12,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 154 proven. 21 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2019-10-13 21:38:12,499 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 7 proven. 168 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2019-10-13 21:38:12,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984716903] [2019-10-13 21:38:12,598 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:12,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505460448] [2019-10-13 21:38:12,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [719999073] [2019-10-13 21:38:12,601 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 21:38:12,601 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:12,601 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:12,602 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:12,602 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:12,634 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:38:13,938 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-13 21:38:13,947 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:38:13,950 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:38:13,950 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:38:13,951 INFO L193 IcfgInterpreter]: Reachable states at location L45-2 satisfy 458#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:13,951 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 488#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int) (v_main_~C~0_BEFORE_CALL_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_3) 0) 4294967296) (mod v_prenex_4 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:13,951 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 448#(and (or (<= 1000 main_~k~0) (and (<= 0 main_~j~0) (<= main_~k~0 0) (<= main_~j~0 0))) (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1 main_~j~0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~k~0 main_~n~0)) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) (and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (<= main_~n~0 1000)))) [2019-10-13 21:38:13,951 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 492#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:38:13,952 INFO L193 IcfgInterpreter]: Reachable states at location L47-2 satisfy 463#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:13,952 INFO L193 IcfgInterpreter]: Reachable states at location L27-2 satisfy 443#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:13,953 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 478#(and (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int) (v_main_~C~0_BEFORE_CALL_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_3) 0) 4294967296) (mod v_prenex_4 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:13,953 INFO L193 IcfgInterpreter]: Reachable states at location L48 satisfy 468#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (= main_~n~0 1000) (< main_~k~0 main_~n~0) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~k~0 4) (* main_~i~0 (* (* main_~n~0 4) main_~n~0)) (* main_~j~0 (* main_~n~0 4)) |main_~#A~0.offset|)) |main_#t~mem1|) (<= 1000 main_~n~0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:13,953 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 21:38:13,953 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 21:38:13,954 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 497#(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 21:38:13,954 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:38:13,954 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 483#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int) (v_main_~C~0_BEFORE_CALL_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_3) 0) 4294967296) (mod v_prenex_4 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:13,954 INFO L193 IcfgInterpreter]: Reachable states at location L42-2 satisfy 453#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:13,955 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 473#(exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int) (v_main_~C~0_BEFORE_CALL_2 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_2 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_3) 0) 4294967296) (mod v_prenex_4 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:38:13,955 INFO L193 IcfgInterpreter]: Reachable states at location L22-2 satisfy 342#(and (or (and (= 0 |#NULL.base|) (= |#length| (store |old(#length)| |main_~#A~0.base| (* (* (* main_~n~0 4) main_~n~0) main_~n~0))) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= main_~n~0 1000) (= |#valid| (store |old(#valid)| |main_~#A~0.base| 1)) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (= main_~n~0 1000) (= |#NULL.offset| 0))) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:14,352 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-10-13 21:38:14,753 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:38:14,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 30 [2019-10-13 21:38:14,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127874386] [2019-10-13 21:38:14,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-13 21:38:14,760 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-13 21:38:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:38:14,762 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 30 states. [2019-10-13 21:38:15,961 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-10-13 21:38:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:17,183 INFO L93 Difference]: Finished difference Result 251 states and 357 transitions. [2019-10-13 21:38:17,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-13 21:38:17,183 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 49 [2019-10-13 21:38:17,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:17,186 INFO L225 Difference]: With dead ends: 251 [2019-10-13 21:38:17,187 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 21:38:17,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=722, Invalid=2140, Unknown=0, NotChecked=0, Total=2862 [2019-10-13 21:38:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 21:38:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2019-10-13 21:38:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2019-10-13 21:38:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2019-10-13 21:38:17,219 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 49 [2019-10-13 21:38:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:17,220 INFO L462 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2019-10-13 21:38:17,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-13 21:38:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2019-10-13 21:38:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 21:38:17,222 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:17,222 INFO L380 BasicCegarLoop]: trace histogram [56, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:17,427 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:17,428 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:17,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1937432377, now seen corresponding path program 3 times [2019-10-13 21:38:17,429 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:17,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612597377] [2019-10-13 21:38:17,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:17,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:17,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:17,442 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:17,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472348968] [2019-10-13 21:38:17,442 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 21:38:17,558 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:38:17,558 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:38:17,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-13 21:38:17,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 1002 proven. 242 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-10-13 21:38:17,778 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 1002 proven. 242 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-10-13 21:38:18,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612597377] [2019-10-13 21:38:18,053 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:18,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472348968] [2019-10-13 21:38:18,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095605732] [2019-10-13 21:38:18,055 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 21:38:18,055 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:18,056 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:18,056 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:18,056 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:18,085 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:38:19,091 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-13 21:38:19,098 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:38:19,101 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:38:19,101 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:38:19,101 INFO L193 IcfgInterpreter]: Reachable states at location L45-2 satisfy 458#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:19,102 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 488#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (v_main_~C~0_BEFORE_CALL_3 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_3 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_5) 0) 4294967296) (mod v_prenex_6 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:19,102 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 448#(and (or (<= 1000 main_~k~0) (and (<= 0 main_~j~0) (<= main_~k~0 0) (<= main_~j~0 0))) (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1 main_~j~0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~k~0 main_~n~0)) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) (and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (<= main_~n~0 1000)))) [2019-10-13 21:38:19,102 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 492#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:38:19,102 INFO L193 IcfgInterpreter]: Reachable states at location L47-2 satisfy 463#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:19,103 INFO L193 IcfgInterpreter]: Reachable states at location L27-2 satisfy 443#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:19,103 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 478#(and (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (v_main_~C~0_BEFORE_CALL_3 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_3 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_5) 0) 4294967296) (mod v_prenex_6 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:19,103 INFO L193 IcfgInterpreter]: Reachable states at location L48 satisfy 468#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (= main_~n~0 1000) (< main_~k~0 main_~n~0) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~k~0 4) (* main_~i~0 (* (* main_~n~0 4) main_~n~0)) (* main_~j~0 (* main_~n~0 4)) |main_~#A~0.offset|)) |main_#t~mem1|) (<= 1000 main_~n~0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:19,103 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 21:38:19,103 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 21:38:19,104 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 497#(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 21:38:19,104 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:38:19,104 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 483#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (v_main_~C~0_BEFORE_CALL_3 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_3 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_5) 0) 4294967296) (mod v_prenex_6 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:19,104 INFO L193 IcfgInterpreter]: Reachable states at location L42-2 satisfy 453#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:19,104 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 473#(exists ((v_prenex_6 Int) (v_prenex_5 Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (v_main_~C~0_BEFORE_CALL_3 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_3 4294967296))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (mod (select (select |#memory_int| v_prenex_5) 0) 4294967296) (mod v_prenex_6 4294967296)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:38:19,105 INFO L193 IcfgInterpreter]: Reachable states at location L22-2 satisfy 342#(and (or (and (= 0 |#NULL.base|) (= |#length| (store |old(#length)| |main_~#A~0.base| (* (* (* main_~n~0 4) main_~n~0) main_~n~0))) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= main_~n~0 1000) (= |#valid| (store |old(#valid)| |main_~#A~0.base| 1)) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (= main_~n~0 1000) (= |#NULL.offset| 0))) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:19,645 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-10-13 21:38:20,059 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:38:20,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 12] total 50 [2019-10-13 21:38:20,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48646846] [2019-10-13 21:38:20,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-10-13 21:38:20,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:20,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-10-13 21:38:20,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=578, Invalid=1872, Unknown=0, NotChecked=0, Total=2450 [2019-10-13 21:38:20,064 INFO L87 Difference]: Start difference. First operand 170 states and 207 transitions. Second operand 50 states. [2019-10-13 21:38:24,053 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2019-10-13 21:38:26,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:26,437 INFO L93 Difference]: Finished difference Result 686 states and 858 transitions. [2019-10-13 21:38:26,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-10-13 21:38:26,438 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 81 [2019-10-13 21:38:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:26,443 INFO L225 Difference]: With dead ends: 686 [2019-10-13 21:38:26,443 INFO L226 Difference]: Without dead ends: 555 [2019-10-13 21:38:26,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3840 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2688, Invalid=8024, Unknown=0, NotChecked=0, Total=10712 [2019-10-13 21:38:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-13 21:38:26,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 550. [2019-10-13 21:38:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2019-10-13 21:38:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 672 transitions. [2019-10-13 21:38:26,525 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 672 transitions. Word has length 81 [2019-10-13 21:38:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:26,525 INFO L462 AbstractCegarLoop]: Abstraction has 550 states and 672 transitions. [2019-10-13 21:38:26,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-10-13 21:38:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 672 transitions. [2019-10-13 21:38:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 21:38:26,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:26,531 INFO L380 BasicCegarLoop]: trace histogram [196, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:26,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:26,735 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1331474927, now seen corresponding path program 4 times [2019-10-13 21:38:26,735 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:26,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045652009] [2019-10-13 21:38:26,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:26,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:26,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:26,753 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:26,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032609398] [2019-10-13 21:38:26,754 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 21:38:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:26,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-13 21:38:27,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 22068 backedges. 2942 proven. 105 refuted. 0 times theorem prover too weak. 19021 trivial. 0 not checked. [2019-10-13 21:38:27,267 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22068 backedges. 2942 proven. 105 refuted. 0 times theorem prover too weak. 19021 trivial. 0 not checked. [2019-10-13 21:38:27,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045652009] [2019-10-13 21:38:27,673 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:27,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032609398] [2019-10-13 21:38:27,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1208965178] [2019-10-13 21:38:27,677 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 21:38:27,677 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:27,677 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:27,678 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:27,678 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:27,697 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:38:28,688 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2019-10-13 21:38:28,694 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:38:28,697 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:38:28,697 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:38:28,697 INFO L193 IcfgInterpreter]: Reachable states at location L45-2 satisfy 458#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:28,713 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 488#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (exists ((v_main_~C~0_BEFORE_CALL_4 Int) (v_prenex_7 Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_4 4294967296))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (mod (select (select |#memory_int| v_prenex_8) 0) 4294967296) (mod v_prenex_7 4294967296)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:28,714 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 448#(and (or (<= 1000 main_~k~0) (and (<= 0 main_~j~0) (<= main_~k~0 0) (<= main_~j~0 0))) (or (and (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1 main_~j~0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (not (< main_~k~0 main_~n~0)) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) (and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (<= main_~n~0 1000)))) [2019-10-13 21:38:28,714 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 492#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:38:28,714 INFO L193 IcfgInterpreter]: Reachable states at location L47-2 satisfy 463#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:28,714 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 478#(and (exists ((v_main_~C~0_BEFORE_CALL_4 Int) (v_prenex_7 Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_4 4294967296))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (mod (select (select |#memory_int| v_prenex_8) 0) 4294967296) (mod v_prenex_7 4294967296)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:28,715 INFO L193 IcfgInterpreter]: Reachable states at location L27-2 satisfy 443#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (<= main_~i~0 1000) (= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:28,715 INFO L193 IcfgInterpreter]: Reachable states at location L48 satisfy 468#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (= main_~n~0 1000) (< main_~k~0 main_~n~0) (< main_~i~0 main_~n~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (= (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~k~0 4) (* main_~i~0 (* (* main_~n~0 4) main_~n~0)) (* main_~j~0 (* main_~n~0 4)) |main_~#A~0.offset|)) |main_#t~mem1|) (<= 1000 main_~n~0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:28,715 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 21:38:28,715 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 21:38:28,715 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 497#(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 21:38:28,715 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:38:28,716 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 483#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (exists ((v_main_~C~0_BEFORE_CALL_4 Int) (v_prenex_7 Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_4 4294967296))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (mod (select (select |#memory_int| v_prenex_8) 0) 4294967296) (mod v_prenex_7 4294967296)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:28,716 INFO L193 IcfgInterpreter]: Reachable states at location L42-2 satisfy 453#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~n~0 1000) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |#NULL.offset| 0) (<= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 1000)) [2019-10-13 21:38:28,716 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 473#(exists ((v_main_~C~0_BEFORE_CALL_4 Int) (v_prenex_7 Int) (|v_main_~#A~0.base_BEFORE_CALL_4| Int) (v_prenex_8 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (not (= (mod (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_4|) 0) 4294967296) (mod v_main_~C~0_BEFORE_CALL_4 4294967296))) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (= (mod (select (select |#memory_int| v_prenex_8) 0) 4294967296) (mod v_prenex_7 4294967296)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:38:28,716 INFO L193 IcfgInterpreter]: Reachable states at location L22-2 satisfy 342#(and (or (and (= 0 |#NULL.base|) (= |#length| (store |old(#length)| |main_~#A~0.base| (* (* (* main_~n~0 4) main_~n~0) main_~n~0))) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= main_~n~0 1000) (= |#valid| (store |old(#valid)| |main_~#A~0.base| 1)) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (= main_~n~0 1000) (= |#NULL.offset| 0))) (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 1000 main_~n~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~n~0 1000)) [2019-10-13 21:38:29,116 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-10-13 21:38:29,428 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:38:29,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 12] total 46 [2019-10-13 21:38:29,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061279826] [2019-10-13 21:38:29,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-10-13 21:38:29,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:29,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-10-13 21:38:29,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=1429, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:38:29,432 INFO L87 Difference]: Start difference. First operand 550 states and 672 transitions. Second operand 46 states. [2019-10-13 21:38:33,163 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-10-13 21:38:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:34,349 INFO L93 Difference]: Finished difference Result 1643 states and 2335 transitions. [2019-10-13 21:38:34,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-10-13 21:38:34,350 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 241 [2019-10-13 21:38:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:34,368 INFO L225 Difference]: With dead ends: 1643 [2019-10-13 21:38:34,369 INFO L226 Difference]: Without dead ends: 1115 [2019-10-13 21:38:34,375 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 676 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2090, Invalid=5220, Unknown=0, NotChecked=0, Total=7310 [2019-10-13 21:38:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2019-10-13 21:38:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1110. [2019-10-13 21:38:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2019-10-13 21:38:34,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1344 transitions. [2019-10-13 21:38:34,553 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1344 transitions. Word has length 241 [2019-10-13 21:38:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:34,555 INFO L462 AbstractCegarLoop]: Abstraction has 1110 states and 1344 transitions. [2019-10-13 21:38:34,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-10-13 21:38:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1344 transitions. [2019-10-13 21:38:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2019-10-13 21:38:34,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:34,572 INFO L380 BasicCegarLoop]: trace histogram [420, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:34,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:34,777 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:34,777 INFO L82 PathProgramCache]: Analyzing trace with hash -148070417, now seen corresponding path program 5 times [2019-10-13 21:38:34,778 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:34,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336389674] [2019-10-13 21:38:34,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:34,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:34,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:34,809 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:34,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466442427] [2019-10-13 21:38:34,809 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true