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-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:37:38,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:37:38,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:37:38,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:37:38,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:37:38,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:37:38,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:37:38,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:37:38,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:37:38,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:37:38,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:37:38,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:37:38,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:37:38,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:37:38,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:37:38,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:37:38,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:37:38,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:37:38,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:37:38,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:37:38,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:37:38,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:37:38,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:37:38,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:37:38,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:37:38,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:37:38,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:37:38,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:37:38,410 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 21:37:38,426 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:37:38,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:37:38,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:37:38,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:37:38,427 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:37:38,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:37:38,428 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:37:38,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:37:38,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:37:38,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:37:38,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:37:38,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:37:38,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:37:38,429 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:37:38,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:37:38,429 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:37:38,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:37:38,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:37:38,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:37:38,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:37:38,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:37:38,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:37:38,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:37:38,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:37:38,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:37:38,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:37:38,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:37:38,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:37:38,432 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 21:37:38,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:37:38,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:37:38,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:37:38,756 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:37:38,756 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:37:38,757 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-2-n-u.c [2019-10-13 21:37:38,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ef2609c/c6d2bc43276947c3b916321c81c996bf/FLAG3b612020e [2019-10-13 21:37:39,211 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:37:39,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-2-n-u.c [2019-10-13 21:37:39,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ef2609c/c6d2bc43276947c3b916321c81c996bf/FLAG3b612020e [2019-10-13 21:37:39,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ef2609c/c6d2bc43276947c3b916321c81c996bf [2019-10-13 21:37:39,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:37:39,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:37:39,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:39,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:37:39,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:37:39,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:39,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dba115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39, skipping insertion in model container [2019-10-13 21:37:39,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:39,683 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:37:39,699 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:37:39,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:39,871 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:37:39,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:39,907 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:37:39,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39 WrapperNode [2019-10-13 21:37:39,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:39,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:37:39,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:37:39,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:37:39,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:39,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:40,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:40,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:40,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:40,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:40,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (1/1) ... [2019-10-13 21:37:40,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:37:40,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:37:40,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:37:40,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:37:40,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (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 21:37:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:37:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:37:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:37:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:37:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:37:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:37:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:37:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:37:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:37:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:37:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:37:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:37:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:37:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:37:40,387 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:37:40,388 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:37:40,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:40 BoogieIcfgContainer [2019-10-13 21:37:40,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:37:40,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:37:40,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:37:40,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:37:40,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:37:39" (1/3) ... [2019-10-13 21:37:40,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7600d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:40, skipping insertion in model container [2019-10-13 21:37:40,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:39" (2/3) ... [2019-10-13 21:37:40,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7600d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:40, skipping insertion in model container [2019-10-13 21:37:40,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:40" (3/3) ... [2019-10-13 21:37:40,397 INFO L109 eAbstractionObserver]: Analyzing ICFG init-2-n-u.c [2019-10-13 21:37:40,405 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:37:40,412 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:37:40,423 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:37:40,446 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:37:40,446 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:37:40,447 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:37:40,447 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:37:40,447 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:37:40,447 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:37:40,447 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:37:40,447 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:37:40,462 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-13 21:37:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:37:40,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:40,468 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:40,470 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:40,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1879326802, now seen corresponding path program 1 times [2019-10-13 21:37:40,481 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:40,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82013519] [2019-10-13 21:37:40,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:40,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:40,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:40,551 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:40,552 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722700353] [2019-10-13 21:37:40,552 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 21:37:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:40,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:40,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:40,655 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 21:37:40,656 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:40,687 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 21:37:40,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82013519] [2019-10-13 21:37:40,688 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:40,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722700353] [2019-10-13 21:37:40,689 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:40,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 21:37:40,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714811393] [2019-10-13 21:37:40,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:37:40,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:37:40,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:37:40,712 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-10-13 21:37:40,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:40,791 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-10-13 21:37:40,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:37:40,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-13 21:37:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:40,810 INFO L225 Difference]: With dead ends: 36 [2019-10-13 21:37:40,810 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 21:37:40,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 21:37:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 21:37:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 21:37:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 21:37:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 21:37:40,851 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2019-10-13 21:37:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:40,852 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 21:37:40,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:37:40,852 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 21:37:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 21:37:40,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:40,854 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:41,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:41,058 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:41,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:41,059 INFO L82 PathProgramCache]: Analyzing trace with hash -347827004, now seen corresponding path program 1 times [2019-10-13 21:37:41,060 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:41,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126716942] [2019-10-13 21:37:41,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:41,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:41,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:41,070 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:41,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446378592] [2019-10-13 21:37:41,071 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 21:37:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:41,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:41,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:41,142 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 21:37:41,142 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:41,166 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 21:37:41,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126716942] [2019-10-13 21:37:41,167 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:41,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446378592] [2019-10-13 21:37:41,168 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:41,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 21:37:41,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81027886] [2019-10-13 21:37:41,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:37:41,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:41,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:37:41,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:37:41,172 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 6 states. [2019-10-13 21:37:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:41,264 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2019-10-13 21:37:41,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:37:41,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-13 21:37:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:41,267 INFO L225 Difference]: With dead ends: 42 [2019-10-13 21:37:41,267 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 21:37:41,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 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 21:37:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 21:37:41,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-13 21:37:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 21:37:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-13 21:37:41,280 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2019-10-13 21:37:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:41,281 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-13 21:37:41,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:37:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-13 21:37:41,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:37:41,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:41,282 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:41,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:41,490 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:41,491 INFO L82 PathProgramCache]: Analyzing trace with hash 671369156, now seen corresponding path program 1 times [2019-10-13 21:37:41,492 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:41,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129000899] [2019-10-13 21:37:41,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:41,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:41,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:41,502 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:41,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681374945] [2019-10-13 21:37:41,503 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 21:37:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:41,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:37:41,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:37:41,630 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:37:41,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129000899] [2019-10-13 21:37:41,703 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:37:41,703 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681374945] [2019-10-13 21:37:41,703 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [343712747] [2019-10-13 21:37:41,751 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:37:41,751 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:41,757 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:41,764 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:41,765 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:41,948 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:42,890 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-13 21:37:42,901 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:42,906 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:42,906 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:42,907 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 198#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:42,907 INFO L193 IcfgInterpreter]: Reachable states at location L36-2 satisfy 175#(and (= |#NULL.base| 0) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (<= main_~C~0 2147483647) (= main_~j~0 0) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= main_~j~0 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0) (<= main_~n~0 1500)) [2019-10-13 21:37:42,907 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 184#(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|) (<= 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| 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| 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 21:37:42,908 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 194#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (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|) (<= 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| 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| 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))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:42,908 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 21:37:42,908 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 21:37:42,909 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 203#(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 21:37:42,909 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 170#(and (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= main_~C~0 2147483647) (= main_~j~0 0) (<= main_~j~0 0) (<= main_~n~0 1500) (= |#NULL.base| 0) (<= 0 |main_~#A~0.offset|) (< main_~j~0 main_~n~0) (<= |#NULL.base| 0) (= |main_#t~mem1| (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~i~0 (* main_~n~0 4)) (* main_~j~0 4) |main_~#A~0.offset|))) (<= main_~i~0 0) (= |main_~#A~0.offset| 0) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (= main_~i~0 0)) [2019-10-13 21:37:42,909 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:42,909 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 189#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (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|) (<= 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| 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| 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))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:42,910 INFO L193 IcfgInterpreter]: Reachable states at location L21-2 satisfy 139#(and (or (and (<= 0 main_~i~0) (<= main_~i~0 0) (<= main_~j~0 0)) (<= 1500 main_~j~0)) (or (and (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (= 0 |main_~#A~0.offset|) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (not (= 0 |main_~#A~0.base|)) (= |#valid| (store |old(#valid)| |main_~#A~0.base| 1)) (= (store |old(#length)| |main_~#A~0.base| (* (* main_~n~0 4) main_~m~0)) |#length|) (<= main_~C~0 2147483647) (= main_~j~0 0) (<= main_~j~0 0) (<= main_~n~0 1500) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (<= |#NULL.base| 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= main_~m~0 1000) (= |#NULL.offset| 0) (<= 0 (+ main_~C~0 2147483648)) (<= 1000 main_~m~0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 |main_~#A~0.offset|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1 main_~i~0) (<= 1500 main_~n~0) (<= main_~C~0 2147483647) (= main_~m~0 1000) (= |#NULL.offset| 0) (not (< main_~j~0 main_~n~0)) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)))) [2019-10-13 21:37:42,910 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 179#(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|) (<= 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| 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| 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 21:37:42,910 INFO L193 IcfgInterpreter]: Reachable states at location L23-2 satisfy 134#(and (or (and (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 main_~i~0) (= 0 |#NULL.base|) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (< main_~i~0 main_~m~0) (= 0 |main_~#A~0.offset|) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (not (= 0 |main_~#A~0.base|)) (= |#valid| (store |old(#valid)| |main_~#A~0.base| 1)) (= (store |old(#length)| |main_~#A~0.base| (* (* main_~n~0 4) main_~m~0)) |#length|) (= main_~j~0 0) (<= main_~j~0 0) (= (select |old(#valid)| |main_~#A~0.base|) 0) (<= 0 |main_~#A~0.offset|) (<= |#NULL.base| 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= main_~m~0 1000) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (<= 0 main_~j~0) (= main_~n~0 1500) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~m~0 1000) (= |main_~#A~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (= main_~m~0 1000) (= |#NULL.offset| 0))) (<= main_~C~0 2147483647) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)) [2019-10-13 21:37:42,911 INFO L193 IcfgInterpreter]: Reachable states at location L34-2 satisfy 149#(and (<= 0 main_~j~0) (<= 0 |main_~#A~0.offset|) (<= 0 main_~i~0) (or (and (= main_~n~0 1500) (= (select |old(#valid)| |main_~#A~0.base|) 0) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 |main_~#A~0.offset|) (not (= 0 |main_~#A~0.base|)) (= 0 (select |old(#valid)| 0)) (= |#valid| (store |old(#valid)| |main_~#A~0.base| 1)) (= (store |old(#length)| |main_~#A~0.base| (* (* main_~n~0 4) main_~m~0)) |#length|) (<= main_~m~0 0) (= main_~j~0 0) (< |main_~#A~0.base| |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= main_~m~0 1000) (= |#NULL.offset| 0) (= main_~i~0 0)) (and (= |#NULL.base| 0) (= main_~n~0 1500) (<= |#NULL.base| 0) (= |main_~#A~0.offset| 0) (= main_~j~0 0) (= main_~m~0 1000) (= |#NULL.offset| 0) (= main_~i~0 0))) (<= 0 |#NULL.base|) (<= |main_~#A~0.offset| 0) (<= main_~i~0 0) (<= main_~m~0 1000) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1500 main_~n~0) (<= main_~C~0 2147483647) (<= main_~j~0 0) (<= 1000 main_~m~0) (<= 0 (+ main_~C~0 2147483648)) (<= main_~n~0 1500)) [2019-10-13 21:37:43,369 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-10-13 21:37:43,810 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:37:43,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 11] total 21 [2019-10-13 21:37:43,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568964434] [2019-10-13 21:37:43,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-13 21:37:43,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:43,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-13 21:37:43,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:37:43,816 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 21 states. [2019-10-13 21:37:44,037 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-10-13 21:37:44,708 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-10-13 21:37:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:45,347 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2019-10-13 21:37:45,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 21:37:45,348 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 20 [2019-10-13 21:37:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:45,350 INFO L225 Difference]: With dead ends: 77 [2019-10-13 21:37:45,350 INFO L226 Difference]: Without dead ends: 58 [2019-10-13 21:37:45,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:37:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-13 21:37:45,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2019-10-13 21:37:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-13 21:37:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2019-10-13 21:37:45,370 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 20 [2019-10-13 21:37:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:45,371 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2019-10-13 21:37:45,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-13 21:37:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2019-10-13 21:37:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 21:37:45,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:45,372 INFO L380 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:45,576 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:45,577 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:45,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:45,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1180073412, now seen corresponding path program 2 times [2019-10-13 21:37:45,579 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:45,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602436316] [2019-10-13 21:37:45,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:45,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:45,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:45,588 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:37:45,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040660159] [2019-10-13 21:37:45,588 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:45,686 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-10-13 21:37:45,686 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:37:45,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 47 conjunts are in the unsatisfiable core [2019-10-13 21:37:45,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:53,692 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-10-13 21:37:58,270 WARN L191 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 63 [2019-10-13 21:37:58,505 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 21:37:58,691 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2019-10-13 21:38:13,418 WARN L191 SmtUtils]: Spent 4.49 s on a formula simplification that was a NOOP. DAG size: 73 [2019-10-13 21:38:13,832 WARN L191 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-10-13 21:38:14,066 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2019-10-13 21:38:18,701 WARN L191 SmtUtils]: Spent 4.60 s on a formula simplification that was a NOOP. DAG size: 79 [2019-10-13 21:38:19,519 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 156 [2019-10-13 21:38:19,758 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80