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-4-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:37:58,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:37:58,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:37:58,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:37:58,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:37:58,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:37:58,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:37:58,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:37:58,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:37:58,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:37:58,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:37:58,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:37:58,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:37:58,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:37:58,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:37:58,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:37:58,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:37:58,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:37:58,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:37:58,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:37:58,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:37:58,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:37:58,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:37:58,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:37:58,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:37:58,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:37:58,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:37:58,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:37:58,893 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 21:37:58,907 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:37:58,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:37:58,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:37:58,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:37:58,909 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:37:58,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:37:58,910 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:37:58,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:37:58,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:37:58,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:37:58,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:37:58,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:37:58,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:37:58,912 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:37:58,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:37:58,913 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:37:58,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:37:58,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:37:58,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:37:58,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:37:58,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:37:58,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:37:58,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:37:58,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:37:58,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:37:58,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:37:58,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:37:58,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:37:58,917 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 21:37:59,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:37:59,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:37:59,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:37:59,206 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:37:59,206 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:37:59,207 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-4-n-u.c [2019-10-13 21:37:59,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808076e8f/bfdfcfb7238f4163aa4daf2c144e7ede/FLAGd1cae37b7 [2019-10-13 21:37:59,781 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:37:59,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-4-n-u.c [2019-10-13 21:37:59,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808076e8f/bfdfcfb7238f4163aa4daf2c144e7ede/FLAGd1cae37b7 [2019-10-13 21:38:00,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808076e8f/bfdfcfb7238f4163aa4daf2c144e7ede [2019-10-13 21:38:00,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:38:00,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:38:00,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:00,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:38:00,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:38:00,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43cf2eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00, skipping insertion in model container [2019-10-13 21:38:00,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,184 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:38:00,209 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:38:00,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:00,411 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:38:00,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:00,562 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:38:00,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00 WrapperNode [2019-10-13 21:38:00,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:00,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:38:00,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:38:00,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:38:00,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (1/1) ... [2019-10-13 21:38:00,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:38:00,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:38:00,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:38:00,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:38:00,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (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 21:38:00,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:38:00,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:38:00,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:38:00,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:38:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:38:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:38:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:38:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:38:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:38:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:38:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:38:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:38:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:38:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:38:01,104 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:38:01,105 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-13 21:38:01,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:01 BoogieIcfgContainer [2019-10-13 21:38:01,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:38:01,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:38:01,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:38:01,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:38:01,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:00" (1/3) ... [2019-10-13 21:38:01,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e268b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:01, skipping insertion in model container [2019-10-13 21:38:01,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:00" (2/3) ... [2019-10-13 21:38:01,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e268b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:01, skipping insertion in model container [2019-10-13 21:38:01,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:01" (3/3) ... [2019-10-13 21:38:01,114 INFO L109 eAbstractionObserver]: Analyzing ICFG init-4-n-u.c [2019-10-13 21:38:01,124 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:38:01,133 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:38:01,144 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:38:01,170 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:38:01,170 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:38:01,170 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:38:01,170 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:38:01,170 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:38:01,171 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:38:01,171 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:38:01,171 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:38:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 21:38:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:38:01,193 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:01,194 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:01,196 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash -463394287, now seen corresponding path program 1 times [2019-10-13 21:38:01,208 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:01,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840908304] [2019-10-13 21:38:01,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:01,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:01,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:01,292 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:01,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841766720] [2019-10-13 21:38:01,293 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 21:38:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:01,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:01,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:01,416 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 21:38:01,416 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:01,450 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 21:38:01,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840908304] [2019-10-13 21:38:01,451 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:01,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841766720] [2019-10-13 21:38:01,452 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:01,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 21:38:01,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137684870] [2019-10-13 21:38:01,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:38:01,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:01,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:38:01,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:38:01,478 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-10-13 21:38:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:01,568 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2019-10-13 21:38:01,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:38:01,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-13 21:38:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:01,584 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:38:01,584 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 21:38:01,588 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 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 21:38:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 21:38:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-13 21:38:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:38:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-10-13 21:38:01,631 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2019-10-13 21:38:01,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:01,631 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-10-13 21:38:01,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:38:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-10-13 21:38:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:38:01,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:01,633 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:01,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:01,835 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:01,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:01,837 INFO L82 PathProgramCache]: Analyzing trace with hash 269738403, now seen corresponding path program 1 times [2019-10-13 21:38:01,838 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:01,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089480025] [2019-10-13 21:38:01,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:01,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:01,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:01,855 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:01,855 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394770825] [2019-10-13 21:38:01,856 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 21:38:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:01,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:01,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:01,932 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 21:38:01,932 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:01,963 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 21:38:01,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089480025] [2019-10-13 21:38:01,964 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:01,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394770825] [2019-10-13 21:38:01,965 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:01,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:38:01,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242086952] [2019-10-13 21:38:01,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:38:01,968 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:01,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:38:01,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:38:01,970 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-10-13 21:38:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:02,115 INFO L93 Difference]: Finished difference Result 58 states and 88 transitions. [2019-10-13 21:38:02,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:38:02,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-13 21:38:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:02,120 INFO L225 Difference]: With dead ends: 58 [2019-10-13 21:38:02,120 INFO L226 Difference]: Without dead ends: 41 [2019-10-13 21:38:02,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 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 21:38:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-13 21:38:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-10-13 21:38:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 21:38:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 57 transitions. [2019-10-13 21:38:02,138 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 57 transitions. Word has length 18 [2019-10-13 21:38:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:02,140 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 57 transitions. [2019-10-13 21:38:02,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:38:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 57 transitions. [2019-10-13 21:38:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 21:38:02,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:02,144 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:02,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:02,347 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:02,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:02,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1600313997, now seen corresponding path program 1 times [2019-10-13 21:38:02,348 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:02,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637100432] [2019-10-13 21:38:02,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:02,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:02,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:02,360 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:02,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554077578] [2019-10-13 21:38:02,361 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 21:38:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:02,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:02,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:02,461 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 21:38:02,461 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:02,485 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 21:38:02,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637100432] [2019-10-13 21:38:02,486 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:02,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554077578] [2019-10-13 21:38:02,487 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:02,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:38:02,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092528641] [2019-10-13 21:38:02,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:38:02,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:02,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:38:02,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:38:02,489 INFO L87 Difference]: Start difference. First operand 40 states and 57 transitions. Second operand 6 states. [2019-10-13 21:38:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:02,602 INFO L93 Difference]: Finished difference Result 94 states and 146 transitions. [2019-10-13 21:38:02,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:38:02,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-13 21:38:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:02,605 INFO L225 Difference]: With dead ends: 94 [2019-10-13 21:38:02,605 INFO L226 Difference]: Without dead ends: 63 [2019-10-13 21:38:02,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 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 21:38:02,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-13 21:38:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-10-13 21:38:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-13 21:38:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2019-10-13 21:38:02,622 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 26 [2019-10-13 21:38:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:02,622 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2019-10-13 21:38:02,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:38:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2019-10-13 21:38:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 21:38:02,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:02,625 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:02,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:02,840 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:02,841 INFO L82 PathProgramCache]: Analyzing trace with hash -225342757, now seen corresponding path program 1 times [2019-10-13 21:38:02,841 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:02,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039617892] [2019-10-13 21:38:02,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:02,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:02,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:02,860 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:02,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2938486] [2019-10-13 21:38:02,861 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 21:38:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:02,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:38:02,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:38:02,968 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:38:02,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039617892] [2019-10-13 21:38:02,999 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:02,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2938486] [2019-10-13 21:38:03,000 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:03,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:38:03,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892333545] [2019-10-13 21:38:03,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:38:03,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:03,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:38:03,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:38:03,003 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand 6 states. [2019-10-13 21:38:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:03,126 INFO L93 Difference]: Finished difference Result 148 states and 225 transitions. [2019-10-13 21:38:03,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:38:03,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2019-10-13 21:38:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:03,130 INFO L225 Difference]: With dead ends: 148 [2019-10-13 21:38:03,130 INFO L226 Difference]: Without dead ends: 95 [2019-10-13 21:38:03,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 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 21:38:03,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-10-13 21:38:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2019-10-13 21:38:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-10-13 21:38:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 123 transitions. [2019-10-13 21:38:03,168 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 123 transitions. Word has length 42 [2019-10-13 21:38:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:03,168 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 123 transitions. [2019-10-13 21:38:03,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:38:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 123 transitions. [2019-10-13 21:38:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 21:38:03,170 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:03,170 INFO L380 BasicCegarLoop]: trace histogram [16, 8, 8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:03,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:03,377 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:03,377 INFO L82 PathProgramCache]: Analyzing trace with hash -101744677, now seen corresponding path program 1 times [2019-10-13 21:38:03,378 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:03,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534193665] [2019-10-13 21:38:03,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:03,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:03,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:03,388 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:03,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402198697] [2019-10-13 21:38:03,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:38:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:03,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:38:03,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-10-13 21:38:03,514 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-10-13 21:38:03,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534193665] [2019-10-13 21:38:03,561 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:03,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402198697] [2019-10-13 21:38:03,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1377133958] [2019-10-13 21:38:03,591 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:38:03,591 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:03,600 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:03,613 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:03,614 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:03,817 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:38:07,623 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-13 21:38:07,637 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:38:07,646 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:38:07,646 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:38:07,647 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 686#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= (select (select |#memory_int| v_prenex_1) 0) 2147483646) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 (+ (select (select |#memory_int| v_prenex_2) 0) 2147483647)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483648))))) (<= __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 21:38:07,648 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 591#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (<= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648))) [2019-10-13 21:38:07,648 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 690#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:38:07,656 INFO L193 IcfgInterpreter]: Reachable states at location L57-2 satisfy 662#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:07,656 INFO L193 IcfgInterpreter]: Reachable states at location L59-2 satisfy 652#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (< main_~k~0 main_~p~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:07,657 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 676#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= (select (select |#memory_int| v_prenex_1) 0) 2147483646) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 (+ (select (select |#memory_int| v_prenex_2) 0) 2147483647)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483648))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:07,657 INFO L193 IcfgInterpreter]: Reachable states at location L50-2 satisfy 596#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:07,657 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 21:38:07,658 INFO L193 IcfgInterpreter]: Reachable states at location L29-2 satisfy 571#(and (or (and (= main_~q~0 2000) (= main_~n~0 1500) (not (< main_~k~0 main_~p~0)) (= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0)) (and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 main_~k~0) (= |main_~#A~0.offset| 0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0))) (or (and (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 1 main_~j~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~p~0 1800) (<= 1800 main_~k~0) (<= main_~q~0 2000) (<= 1500 main_~n~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)) (and (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1500 main_~n~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)))) [2019-10-13 21:38:07,658 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 21:38:07,659 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 695#(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 21:38:07,659 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:38:07,659 INFO L193 IcfgInterpreter]: Reachable states at location L60 satisfy 637#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (< main_~k~0 main_~p~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~i~0 (* (* (* main_~q~0 4) main_~p~0) main_~n~0)) (* main_~l~0 4) (* main_~k~0 (* main_~q~0 4)) |main_~#A~0.offset| (* main_~j~0 (* (* main_~q~0 4) main_~p~0))))) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (< main_~l~0 main_~q~0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:07,659 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 681#(and (exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= (select (select |#memory_int| v_prenex_1) 0) 2147483646) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 (+ (select (select |#memory_int| v_prenex_2) 0) 2147483647)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483648))))) (<= __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 21:38:07,660 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 671#(exists ((v_prenex_2 Int) (|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_prenex_1 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= (select (select |#memory_int| v_prenex_1) 0) 2147483646) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= 0 (+ (select (select |#memory_int| v_prenex_2) 0) 2147483647)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483647) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|) 0) 2147483648))))) [2019-10-13 21:38:07,660 INFO L193 IcfgInterpreter]: Reachable states at location L32-2 satisfy 467#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648))) [2019-10-13 21:38:07,660 INFO L193 IcfgInterpreter]: Reachable states at location L54-2 satisfy 667#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:07,661 INFO L193 IcfgInterpreter]: Reachable states at location L34-2 satisfy 408#(and (or (and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (= 0 |#NULL.base|) (< main_~i~0 main_~m~0) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (< main_~k~0 main_~p~0) (= |#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) (= main_~l~0 0) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (= |#length| (store |old(#length)| |main_~#A~0.base| (* (* (* (* main_~q~0 4) main_~p~0) main_~n~0) main_~m~0))) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= main_~l~0 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (= |main_~#A~0.offset| 0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0))) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1500 main_~n~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)) [2019-10-13 21:38:08,524 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2019-10-13 21:38:08,794 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-10-13 21:38:08,863 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:38:08,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 12] total 22 [2019-10-13 21:38:08,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848519149] [2019-10-13 21:38:08,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 21:38:08,866 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:08,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 21:38:08,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:38:08,867 INFO L87 Difference]: Start difference. First operand 94 states and 123 transitions. Second operand 22 states. [2019-10-13 21:38:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:10,619 INFO L93 Difference]: Finished difference Result 269 states and 390 transitions. [2019-10-13 21:38:10,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:38:10,620 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2019-10-13 21:38:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:10,622 INFO L225 Difference]: With dead ends: 269 [2019-10-13 21:38:10,622 INFO L226 Difference]: Without dead ends: 186 [2019-10-13 21:38:10,624 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:38:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-13 21:38:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2019-10-13 21:38:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-10-13 21:38:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 229 transitions. [2019-10-13 21:38:10,666 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 229 transitions. Word has length 58 [2019-10-13 21:38:10,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:10,666 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 229 transitions. [2019-10-13 21:38:10,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 21:38:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 229 transitions. [2019-10-13 21:38:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 21:38:10,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:10,670 INFO L380 BasicCegarLoop]: trace histogram [48, 8, 8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:10,874 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:10,875 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:10,876 INFO L82 PathProgramCache]: Analyzing trace with hash 387426779, now seen corresponding path program 2 times [2019-10-13 21:38:10,876 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:10,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853687759] [2019-10-13 21:38:10,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:10,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:10,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:10,890 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:10,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636404357] [2019-10-13 21:38:10,891 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 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 21:38:11,121 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-10-13 21:38:11,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:38:11,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 21:38:11,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 361 proven. 21 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2019-10-13 21:38:11,271 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:38:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 18 proven. 364 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2019-10-13 21:38:11,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853687759] [2019-10-13 21:38:11,373 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:38:11,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636404357] [2019-10-13 21:38:11,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258732224] [2019-10-13 21:38:11,377 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 21:38:11,377 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:38:11,377 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:38:11,378 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:38:11,378 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:38:11,407 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:38:13,599 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-13 21:38:13,607 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:38:13,610 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:38:13,610 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:38:13,611 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 658#(and (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 (+ (select (select |#memory_int| v_prenex_3) 0) 2147483647)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= (select (select |#memory_int| v_prenex_4) 0) 2147483646) (<= |#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|) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483647) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483648)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __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 21:38:13,611 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 563#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (<= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648))) [2019-10-13 21:38:13,611 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 662#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:38:13,611 INFO L193 IcfgInterpreter]: Reachable states at location L57-2 satisfy 634#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:13,612 INFO L193 IcfgInterpreter]: Reachable states at location L59-2 satisfy 624#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (< main_~k~0 main_~p~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:13,612 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 648#(and (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 (+ (select (select |#memory_int| v_prenex_3) 0) 2147483647)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= (select (select |#memory_int| v_prenex_4) 0) 2147483646) (<= |#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|) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483647) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483648)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:38:13,612 INFO L193 IcfgInterpreter]: Reachable states at location L50-2 satisfy 568#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:13,613 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 21:38:13,613 INFO L193 IcfgInterpreter]: Reachable states at location L29-2 satisfy 543#(and (or (and (= main_~q~0 2000) (= main_~n~0 1500) (not (< main_~k~0 main_~p~0)) (= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0)) (and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 main_~k~0) (= |main_~#A~0.offset| 0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0))) (or (and (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 1 main_~j~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~p~0 1800) (<= 1800 main_~k~0) (<= main_~q~0 2000) (<= 1500 main_~n~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)) (and (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1500 main_~n~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)))) [2019-10-13 21:38:13,613 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 21:38:13,613 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 667#(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 21:38:13,613 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:38:13,614 INFO L193 IcfgInterpreter]: Reachable states at location L60 satisfy 609#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (< main_~k~0 main_~p~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~i~0 (* (* (* main_~q~0 4) main_~p~0) main_~n~0)) (* main_~l~0 4) (* main_~k~0 (* main_~q~0 4)) |main_~#A~0.offset| (* main_~j~0 (* (* main_~q~0 4) main_~p~0))))) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (< main_~l~0 main_~q~0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:13,614 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 653#(and (exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 (+ (select (select |#memory_int| v_prenex_3) 0) 2147483647)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= (select (select |#memory_int| v_prenex_4) 0) 2147483646) (<= |#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|) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483647) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483648)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __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 21:38:13,614 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 643#(exists ((v_prenex_4 Int) (v_prenex_3 Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= 0 (+ (select (select |#memory_int| v_prenex_3) 0) 2147483647)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= (select (select |#memory_int| v_prenex_4) 0) 2147483646) (<= |#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|) (<= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483647) (<= 0 (+ (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) 0) 2147483648)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:38:13,615 INFO L193 IcfgInterpreter]: Reachable states at location L32-2 satisfy 439#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648))) [2019-10-13 21:38:13,615 INFO L193 IcfgInterpreter]: Reachable states at location L54-2 satisfy 639#(and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~k~0) (<= |#NULL.base| 0) (<= main_~l~0 0) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:38:13,615 INFO L193 IcfgInterpreter]: Reachable states at location L34-2 satisfy 380#(and (or (and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (= 0 |#NULL.base|) (< main_~i~0 main_~m~0) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (< main_~k~0 main_~p~0) (= |#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) (= main_~l~0 0) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (= |#length| (store |old(#length)| |main_~#A~0.base| (* (* (* (* main_~q~0 4) main_~p~0) main_~n~0) main_~m~0))) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (<= main_~l~0 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= main_~q~0 2000) (<= 0 main_~j~0) (= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (= |main_~#A~0.offset| 0) (= main_~p~0 1800) (= main_~m~0 1000) (= |#NULL.offset| 0))) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 main_~l~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= main_~p~0 1800) (<= main_~q~0 2000) (<= 1500 main_~n~0) (<= 1800 main_~p~0) (<= 2000 main_~q~0) (<= main_~C~0 2147483647) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)) [2019-10-13 21:38:14,442 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2019-10-13 21:38:14,665 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-10-13 21:38:14,721 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:38:14,721 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 30 [2019-10-13 21:38:14,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800846954] [2019-10-13 21:38:14,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-13 21:38:14,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:14,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-13 21:38:14,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:38:14,725 INFO L87 Difference]: Start difference. First operand 183 states and 229 transitions. Second operand 30 states. [2019-10-13 21:38:16,043 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-10-13 21:38:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:17,638 INFO L93 Difference]: Finished difference Result 514 states and 732 transitions. [2019-10-13 21:38:17,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:38:17,638 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 90 [2019-10-13 21:38:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:17,642 INFO L225 Difference]: With dead ends: 514 [2019-10-13 21:38:17,643 INFO L226 Difference]: Without dead ends: 346 [2019-10-13 21:38:17,645 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 233 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=660, Invalid=1890, Unknown=0, NotChecked=0, Total=2550 [2019-10-13 21:38:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-10-13 21:38:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 343. [2019-10-13 21:38:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 21:38:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 421 transitions. [2019-10-13 21:38:17,702 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 421 transitions. Word has length 90 [2019-10-13 21:38:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:17,702 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 421 transitions. [2019-10-13 21:38:17,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-13 21:38:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 421 transitions. [2019-10-13 21:38:17,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:38:17,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:17,705 INFO L380 BasicCegarLoop]: trace histogram [112, 8, 8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:17,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:17,909 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:17,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:17,910 INFO L82 PathProgramCache]: Analyzing trace with hash -937886245, now seen corresponding path program 3 times [2019-10-13 21:38:17,911 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:17,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186200869] [2019-10-13 21:38:17,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:17,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:17,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:17,925 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:38:17,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968541012] [2019-10-13 21:38:17,925 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 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