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/copy-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:37:21,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:37:21,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:37:21,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:37:21,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:37:21,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:37:21,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:37:21,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:37:21,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:37:21,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:37:21,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:37:21,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:37:21,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:37:21,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:37:21,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:37:21,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:37:21,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:37:21,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:37:21,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:37:21,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:37:21,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:37:21,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:37:21,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:37:21,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:37:21,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:37:21,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:37:21,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:37:21,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:37:21,828 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 21:37:21,841 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:37:21,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:37:21,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:37:21,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:37:21,842 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:37:21,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:37:21,843 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:37:21,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:37:21,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:37:21,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:37:21,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:37:21,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:37:21,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:37:21,844 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:37:21,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:37:21,845 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:37:21,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:37:21,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:37:21,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:37:21,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:37:21,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:37:21,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:37:21,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:37:21,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:37:21,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:37:21,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:37:21,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:37:21,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:37:21,847 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 21:37:22,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:37:22,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:37:22,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:37:22,169 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:37:22,169 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:37:22,170 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-3-n-u.c [2019-10-13 21:37:22,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51d1f82e8/14f11d47cb7544e8a708441b05877864/FLAGae27796c6 [2019-10-13 21:37:22,700 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:37:22,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-3-n-u.c [2019-10-13 21:37:22,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51d1f82e8/14f11d47cb7544e8a708441b05877864/FLAGae27796c6 [2019-10-13 21:37:23,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51d1f82e8/14f11d47cb7544e8a708441b05877864 [2019-10-13 21:37:23,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:37:23,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:37:23,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:23,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:37:23,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:37:23,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23, skipping insertion in model container [2019-10-13 21:37:23,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,106 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:37:23,125 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:37:23,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:23,352 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:37:23,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:23,498 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:37:23,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23 WrapperNode [2019-10-13 21:37:23,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:23,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:37:23,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:37:23,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:37:23,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (1/1) ... [2019-10-13 21:37:23,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:37:23,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:37:23,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:37:23,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:37:23,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (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 21:37:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:37:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:37:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:37:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:37:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:37:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:37:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:37:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:37:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:37:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:37:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:37:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:37:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:37:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:37:24,087 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:37:24,088 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-13 21:37:24,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:24 BoogieIcfgContainer [2019-10-13 21:37:24,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:37:24,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:37:24,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:37:24,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:37:24,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:37:23" (1/3) ... [2019-10-13 21:37:24,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f60872e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:24, skipping insertion in model container [2019-10-13 21:37:24,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:23" (2/3) ... [2019-10-13 21:37:24,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f60872e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:24, skipping insertion in model container [2019-10-13 21:37:24,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:24" (3/3) ... [2019-10-13 21:37:24,098 INFO L109 eAbstractionObserver]: Analyzing ICFG copy-3-n-u.c [2019-10-13 21:37:24,106 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:37:24,112 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:37:24,123 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:37:24,147 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:37:24,147 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:37:24,148 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:37:24,148 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:37:24,148 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:37:24,148 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:37:24,148 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:37:24,149 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:37:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-13 21:37:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:37:24,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:24,175 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:24,177 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:24,183 INFO L82 PathProgramCache]: Analyzing trace with hash -444599937, now seen corresponding path program 1 times [2019-10-13 21:37:24,192 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:24,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232377496] [2019-10-13 21:37:24,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:24,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:24,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:24,275 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:24,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836439601] [2019-10-13 21:37:24,276 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 21:37:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:24,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:24,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:24,415 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 21:37:24,415 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:24,444 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 21:37:24,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232377496] [2019-10-13 21:37:24,445 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:24,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836439601] [2019-10-13 21:37:24,447 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:24,447 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 21:37:24,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918247305] [2019-10-13 21:37:24,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:37:24,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:37:24,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:37:24,471 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2019-10-13 21:37:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:24,568 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2019-10-13 21:37:24,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:37:24,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-13 21:37:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:24,582 INFO L225 Difference]: With dead ends: 46 [2019-10-13 21:37:24,582 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 21:37:24,585 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 21:37:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 21:37:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-13 21:37:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:37:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-10-13 21:37:24,639 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2019-10-13 21:37:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:24,640 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-10-13 21:37:24,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:37:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-10-13 21:37:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:37:24,642 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:24,642 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:24,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:24,846 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:24,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1423815787, now seen corresponding path program 1 times [2019-10-13 21:37:24,847 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:24,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098959699] [2019-10-13 21:37:24,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:24,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:24,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:24,866 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:24,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263271493] [2019-10-13 21:37:24,867 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 21:37:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:24,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:24,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:24,965 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 21:37:24,965 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:24,992 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 21:37:24,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098959699] [2019-10-13 21:37:24,993 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:24,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263271493] [2019-10-13 21:37:24,993 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:24,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:37:24,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842908700] [2019-10-13 21:37:24,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:37:24,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:24,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:37:24,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:37:24,997 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-10-13 21:37:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:25,158 INFO L93 Difference]: Finished difference Result 60 states and 92 transitions. [2019-10-13 21:37:25,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:37:25,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-13 21:37:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:25,163 INFO L225 Difference]: With dead ends: 60 [2019-10-13 21:37:25,163 INFO L226 Difference]: Without dead ends: 42 [2019-10-13 21:37:25,165 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 21:37:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-13 21:37:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-10-13 21:37:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 21:37:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2019-10-13 21:37:25,196 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 18 [2019-10-13 21:37:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:25,197 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2019-10-13 21:37:25,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:37:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2019-10-13 21:37:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 21:37:25,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:25,199 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 21:37:25,402 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:25,403 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:25,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1484743943, now seen corresponding path program 1 times [2019-10-13 21:37:25,404 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:25,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957399178] [2019-10-13 21:37:25,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:25,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:25,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:25,413 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:25,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851482199] [2019-10-13 21:37:25,414 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 21:37:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:25,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:25,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:25,483 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 21:37:25,483 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:25,512 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 21:37:25,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957399178] [2019-10-13 21:37:25,513 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:25,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851482199] [2019-10-13 21:37:25,513 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:25,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:37:25,514 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447023040] [2019-10-13 21:37:25,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:37:25,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:37:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:37:25,515 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand 6 states. [2019-10-13 21:37:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:25,615 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2019-10-13 21:37:25,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:37:25,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-13 21:37:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:25,617 INFO L225 Difference]: With dead ends: 94 [2019-10-13 21:37:25,617 INFO L226 Difference]: Without dead ends: 62 [2019-10-13 21:37:25,618 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 21:37:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-10-13 21:37:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2019-10-13 21:37:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-13 21:37:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2019-10-13 21:37:25,632 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 26 [2019-10-13 21:37:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:25,633 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2019-10-13 21:37:25,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:37:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2019-10-13 21:37:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-13 21:37:25,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:25,634 INFO L380 BasicCegarLoop]: trace histogram [8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:25,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:25,841 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:25,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1860693383, now seen corresponding path program 1 times [2019-10-13 21:37:25,842 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:25,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756796483] [2019-10-13 21:37:25,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:25,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:25,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:25,852 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:25,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613803917] [2019-10-13 21:37:25,853 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 21:37:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:25,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:37:25,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:25,964 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 21:37:25,965 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:26,012 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 21:37:26,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756796483] [2019-10-13 21:37:26,012 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:26,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613803917] [2019-10-13 21:37:26,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [322650555] [2019-10-13 21:37:26,043 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-13 21:37:26,043 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:26,050 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:26,059 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:26,059 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:26,265 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:26,958 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2019-10-13 21:37:26,964 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:26,969 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:26,970 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:26,970 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 280#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:26,971 INFO L193 IcfgInterpreter]: Reachable states at location L68-2 satisfy 251#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:26,971 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 231#(and (or (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0)) (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0)))) (<= 0 main_~k~0)) [2019-10-13 21:37:26,971 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 266#false [2019-10-13 21:37:26,972 INFO L193 IcfgInterpreter]: Reachable states at location L28-2 satisfy 226#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~k~0)) [2019-10-13 21:37:26,972 INFO L193 IcfgInterpreter]: Reachable states at location L69 satisfy 256#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (<= 0 main_~p~0) (< main_~k~0 main_~p~0) (= (select (select |#memory_int| |main_~#B~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#B~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem3|) (= |main_#t~mem2| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)) |main_~#A~0.offset|))) (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:26,972 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 21:37:26,972 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 21:37:26,973 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 285#(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 21:37:26,973 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:26,973 INFO L193 IcfgInterpreter]: Reachable states at location L63-2 satisfy 241#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:26,973 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 271#false [2019-10-13 21:37:26,974 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 261#false [2019-10-13 21:37:26,974 INFO L193 IcfgInterpreter]: Reachable states at location L43-2 satisfy 236#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:26,974 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 276#false [2019-10-13 21:37:26,974 INFO L193 IcfgInterpreter]: Reachable states at location L23-2 satisfy 173#true [2019-10-13 21:37:26,975 INFO L193 IcfgInterpreter]: Reachable states at location L66-2 satisfy 246#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~m~0 0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:27,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:37:27,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6] total 18 [2019-10-13 21:37:27,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973804016] [2019-10-13 21:37:27,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:37:27,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:37:27,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:37:27,205 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 10 states. [2019-10-13 21:37:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:27,684 INFO L93 Difference]: Finished difference Result 93 states and 118 transitions. [2019-10-13 21:37:27,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:37:27,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-10-13 21:37:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:27,686 INFO L225 Difference]: With dead ends: 93 [2019-10-13 21:37:27,686 INFO L226 Difference]: Without dead ends: 68 [2019-10-13 21:37:27,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:37:27,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-13 21:37:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2019-10-13 21:37:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-13 21:37:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2019-10-13 21:37:27,720 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 34 [2019-10-13 21:37:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:27,720 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2019-10-13 21:37:27,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:37:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2019-10-13 21:37:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 21:37:27,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:27,725 INFO L380 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:27,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:27,929 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:27,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2019913140, now seen corresponding path program 1 times [2019-10-13 21:37:27,929 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:27,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321532625] [2019-10-13 21:37:27,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:27,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:27,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:27,940 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:27,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049947823] [2019-10-13 21:37:27,940 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 21:37:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:28,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:37:28,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-13 21:37:28,075 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-13 21:37:28,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321532625] [2019-10-13 21:37:28,117 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:28,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049947823] [2019-10-13 21:37:28,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1976302210] [2019-10-13 21:37:28,120 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:37:28,120 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:28,121 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:28,122 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:28,122 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:28,161 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:28,978 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:37:28,986 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:28,990 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:28,991 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:28,991 INFO L193 IcfgInterpreter]: Reachable states at location L46-2 satisfy 436#(and (or (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0))) (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0))) (and (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0))) [2019-10-13 21:37:28,991 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 459#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:28,991 INFO L193 IcfgInterpreter]: Reachable states at location L68-2 satisfy 372#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:28,992 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 231#(and (or (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0)) (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0)))) (<= 0 main_~k~0)) [2019-10-13 21:37:28,992 INFO L193 IcfgInterpreter]: Reachable states at location L48-2 satisfy 431#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:37:28,992 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 445#(and (exists ((v_prenex_4 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_1) (select (select |#memory_int| v_prenex_4) v_prenex_3))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:28,992 INFO L193 IcfgInterpreter]: Reachable states at location L28-2 satisfy 226#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~k~0)) [2019-10-13 21:37:28,992 INFO L193 IcfgInterpreter]: Reachable states at location L69 satisfy 377#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (<= 0 main_~p~0) (< main_~k~0 main_~p~0) (= (select (select |#memory_int| |main_~#B~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#B~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem3|) (= |main_#t~mem2| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)) |main_~#A~0.offset|))) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:28,993 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 21:37:28,993 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 21:37:28,993 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 464#(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 21:37:28,994 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:28,994 INFO L193 IcfgInterpreter]: Reachable states at location L63-2 satisfy 362#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:28,994 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 450#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_4 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_1) (select (select |#memory_int| v_prenex_4) v_prenex_3))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:28,995 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 440#(exists ((v_prenex_4 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_1) (select (select |#memory_int| v_prenex_4) v_prenex_3))))) [2019-10-13 21:37:28,996 INFO L193 IcfgInterpreter]: Reachable states at location L43-2 satisfy 357#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:37:28,996 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 455#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_4 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#B~0.offset_BEFORE_CALL_2| Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.offset_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|) |v_main_~#B~0.offset_BEFORE_CALL_2|) (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|) |v_main_~#A~0.offset_BEFORE_CALL_2|)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| v_prenex_2) v_prenex_1) (select (select |#memory_int| v_prenex_4) v_prenex_3))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:28,996 INFO L193 IcfgInterpreter]: Reachable states at location L23-2 satisfy 173#true [2019-10-13 21:37:28,996 INFO L193 IcfgInterpreter]: Reachable states at location L66-2 satisfy 367#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:29,574 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:37:29,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 17] total 26 [2019-10-13 21:37:29,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338173078] [2019-10-13 21:37:29,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:37:29,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:29,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:37:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:37:29,578 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 26 states. [2019-10-13 21:37:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:30,893 INFO L93 Difference]: Finished difference Result 173 states and 246 transitions. [2019-10-13 21:37:30,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:37:30,894 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2019-10-13 21:37:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:30,897 INFO L225 Difference]: With dead ends: 173 [2019-10-13 21:37:30,897 INFO L226 Difference]: Without dead ends: 122 [2019-10-13 21:37:30,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2019-10-13 21:37:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-10-13 21:37:30,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2019-10-13 21:37:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-13 21:37:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 143 transitions. [2019-10-13 21:37:30,942 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 143 transitions. Word has length 44 [2019-10-13 21:37:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:30,942 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 143 transitions. [2019-10-13 21:37:30,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:37:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 143 transitions. [2019-10-13 21:37:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-13 21:37:30,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:30,944 INFO L380 BasicCegarLoop]: trace histogram [24, 12, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:31,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:31,156 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:31,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1572511948, now seen corresponding path program 2 times [2019-10-13 21:37:31,156 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:31,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135433293] [2019-10-13 21:37:31,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:31,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:31,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:31,167 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:31,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656328475] [2019-10-13 21:37:31,171 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 21:37:31,253 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:37:31,253 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:37:31,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:37:31,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2019-10-13 21:37:31,314 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2019-10-13 21:37:31,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135433293] [2019-10-13 21:37:31,356 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:31,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656328475] [2019-10-13 21:37:31,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1172359591] [2019-10-13 21:37:31,361 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 21:37:31,362 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:31,363 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:31,363 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:31,363 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:31,391 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:31,979 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2019-10-13 21:37:31,987 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:31,991 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:31,991 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:31,992 INFO L193 IcfgInterpreter]: Reachable states at location L46-2 satisfy 436#(and (or (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0))) (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0))) (and (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0))) [2019-10-13 21:37:31,992 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 459#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:31,992 INFO L193 IcfgInterpreter]: Reachable states at location L68-2 satisfy 372#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:31,992 INFO L193 IcfgInterpreter]: Reachable states at location L26-2 satisfy 231#(and (or (and (<= 0 main_~j~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~j~0 0)) (and (<= 0 main_~n~0) (<= 1 main_~j~0) (not (< main_~k~0 main_~p~0)))) (<= 0 main_~k~0)) [2019-10-13 21:37:31,993 INFO L193 IcfgInterpreter]: Reachable states at location L48-2 satisfy 431#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:37:31,993 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 445#(and (exists ((v_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_6) v_prenex_7) (select (select |#memory_int| v_prenex_5) v_prenex_8)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:31,993 INFO L193 IcfgInterpreter]: Reachable states at location L28-2 satisfy 226#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~k~0)) [2019-10-13 21:37:31,993 INFO L193 IcfgInterpreter]: Reachable states at location L69 satisfy 377#(and (<= 0 main_~j~0) (<= 0 main_~n~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (< main_~j~0 main_~n~0) (< main_~i~0 main_~m~0) (<= main_~i~0 0) (<= 0 main_~p~0) (< main_~k~0 main_~p~0) (= (select (select |#memory_int| |main_~#B~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) |main_~#B~0.offset| (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)))) |main_#t~mem3|) (= |main_#t~mem2| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~j~0 (* main_~p~0 4)) (* main_~k~0 4) (* main_~i~0 (* (* main_~p~0 4) main_~n~0)) |main_~#A~0.offset|))) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:31,994 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 21:37:31,994 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 21:37:31,997 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 464#(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 21:37:31,998 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:31,998 INFO L193 IcfgInterpreter]: Reachable states at location L63-2 satisfy 362#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (= main_~k~0 0) (= main_~j~0 0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:31,998 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 450#(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_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_6) v_prenex_7) (select (select |#memory_int| v_prenex_5) v_prenex_8)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:31,998 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 440#(exists ((v_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_6) v_prenex_7) (select (select |#memory_int| v_prenex_5) v_prenex_8)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|))))) [2019-10-13 21:37:31,999 INFO L193 IcfgInterpreter]: Reachable states at location L43-2 satisfy 357#(and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= 0 main_~k~0)) [2019-10-13 21:37:32,001 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 455#(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_prenex_6 Int) (v_prenex_7 Int) (v_prenex_5 Int) (|v_main_~#B~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (|v_main_~#A~0.offset_BEFORE_CALL_3| Int) (|v_main_~#B~0.offset_BEFORE_CALL_3| Int) (v_prenex_8 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_6) v_prenex_7) (select (select |#memory_int| v_prenex_5) v_prenex_8)))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|) |v_main_~#A~0.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|) |v_main_~#B~0.offset_BEFORE_CALL_3|))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:32,002 INFO L193 IcfgInterpreter]: Reachable states at location L23-2 satisfy 173#true [2019-10-13 21:37:32,002 INFO L193 IcfgInterpreter]: Reachable states at location L66-2 satisfy 367#(and (<= 0 main_~j~0) (<= 0 main_~m~0) (<= 0 main_~i~0) (<= 0 main_~k~0) (= main_~k~0 0) (= main_~j~0 0) (< main_~i~0 main_~m~0) (<= main_~k~0 0) (<= main_~i~0 0) (<= main_~j~0 0) (= main_~i~0 0)) [2019-10-13 21:37:32,519 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:37:32,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 17] total 24 [2019-10-13 21:37:32,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730791245] [2019-10-13 21:37:32,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:37:32,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:32,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:37:32,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:37:32,524 INFO L87 Difference]: Start difference. First operand 117 states and 143 transitions. Second operand 24 states. [2019-10-13 21:37:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:34,133 INFO L93 Difference]: Finished difference Result 407 states and 515 transitions. [2019-10-13 21:37:34,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 21:37:34,133 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 68 [2019-10-13 21:37:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:34,137 INFO L225 Difference]: With dead ends: 407 [2019-10-13 21:37:34,137 INFO L226 Difference]: Without dead ends: 332 [2019-10-13 21:37:34,142 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:37:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2019-10-13 21:37:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 207. [2019-10-13 21:37:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-10-13 21:37:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2019-10-13 21:37:34,180 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 68 [2019-10-13 21:37:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:34,180 INFO L462 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2019-10-13 21:37:34,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:37:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2019-10-13 21:37:34,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:37:34,183 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:34,183 INFO L380 BasicCegarLoop]: trace histogram [48, 48, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:34,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:34,386 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2130608861, now seen corresponding path program 3 times [2019-10-13 21:37:34,387 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:34,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755000240] [2019-10-13 21:37:34,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:34,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:34,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:34,405 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:34,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815650203] [2019-10-13 21:37:34,405 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