/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/matrix-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:14:39,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:14:39,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:14:39,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:14:39,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:14:39,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:14:39,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:14:39,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:14:39,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:14:39,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:14:39,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:14:39,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:14:39,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:14:39,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:14:39,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:14:39,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:14:39,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:14:39,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:14:39,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:14:39,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:14:39,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:14:39,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:14:39,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:14:39,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:14:39,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:14:39,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:14:39,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:14:39,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:14:39,609 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 [2019-11-23 22:14:39,623 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:14:39,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:14:39,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:14:39,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:14:39,625 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:14:39,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:14:39,626 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:14:39,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:14:39,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:14:39,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:14:39,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:14:39,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:14:39,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:14:39,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:14:39,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:14:39,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:14:39,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:14:39,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:14:39,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:14:39,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:14:39,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:14:39,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:14:39,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:14:39,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:14:39,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:14:39,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:14:39,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:14:39,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:14:39,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:14:39,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:14:39,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:14:39,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:14:39,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:14:39,973 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:14:39,973 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:14:39,974 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-1.c [2019-11-23 22:14:40,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaa9492e/5de9e1f0dd044ddca667e69e57676116/FLAGc52e8623b [2019-11-23 22:14:40,472 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:14:40,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c [2019-11-23 22:14:40,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaa9492e/5de9e1f0dd044ddca667e69e57676116/FLAGc52e8623b [2019-11-23 22:14:40,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaa9492e/5de9e1f0dd044ddca667e69e57676116 [2019-11-23 22:14:40,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:14:40,877 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:14:40,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:14:40,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:14:40,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:14:40,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:14:40" (1/1) ... [2019-11-23 22:14:40,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a74ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:40, skipping insertion in model container [2019-11-23 22:14:40,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:14:40" (1/1) ... [2019-11-23 22:14:40,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:14:40,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:14:41,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:14:41,110 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:14:41,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:14:41,152 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:14:41,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41 WrapperNode [2019-11-23 22:14:41,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:14:41,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:14:41,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:14:41,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:14:41,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:14:41,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:14:41,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:14:41,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:14:41,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (1/1) ... [2019-11-23 22:14:41,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:14:41,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:14:41,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:14:41,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:14:41,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (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 [2019-11-23 22:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:14:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:14:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:14:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:14:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:14:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:14:41,601 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:14:41,601 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-23 22:14:41,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:14:41 BoogieIcfgContainer [2019-11-23 22:14:41,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:14:41,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:14:41,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:14:41,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:14:41,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:14:40" (1/3) ... [2019-11-23 22:14:41,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275a0df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:14:41, skipping insertion in model container [2019-11-23 22:14:41,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:14:41" (2/3) ... [2019-11-23 22:14:41,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275a0df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:14:41, skipping insertion in model container [2019-11-23 22:14:41,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:14:41" (3/3) ... [2019-11-23 22:14:41,623 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2019-11-23 22:14:41,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:14:41,664 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:14:41,675 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:14:41,696 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:14:41,697 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:14:41,697 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:14:41,697 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:14:41,697 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:14:41,697 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:14:41,697 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:14:41,698 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:14:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-23 22:14:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:14:41,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:14:41,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:14:41,715 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:14:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:14:41,720 INFO L82 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2019-11-23 22:14:41,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:14:41,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962560274] [2019-11-23 22:14:41,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:14:41,799 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:14:41,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027550689] [2019-11-23 22:14:41,800 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 [2019-11-23 22:14:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:14:41,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 22:14:41,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:14:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:14:41,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962560274] [2019-11-23 22:14:41,915 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:14:41,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027550689] [2019-11-23 22:14:41,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:14:41,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:14:41,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708807568] [2019-11-23 22:14:41,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:14:41,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:14:41,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:14:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:14:41,939 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-23 22:14:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:14:42,006 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2019-11-23 22:14:42,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:14:42,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 22:14:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:14:42,018 INFO L225 Difference]: With dead ends: 33 [2019-11-23 22:14:42,018 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:14:42,021 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:14:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:14:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2019-11-23 22:14:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 22:14:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-23 22:14:42,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2019-11-23 22:14:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:14:42,053 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-23 22:14:42,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:14:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-23 22:14:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:14:42,054 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:14:42,054 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:14:42,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:14:42,258 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:14:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:14:42,260 INFO L82 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2019-11-23 22:14:42,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:14:42,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735134036] [2019-11-23 22:14:42,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:14:42,269 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:14:42,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811327269] [2019-11-23 22:14:42,269 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 [2019-11-23 22:14:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:14:42,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:14:42,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:14:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:14:42,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735134036] [2019-11-23 22:14:42,360 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:14:42,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811327269] [2019-11-23 22:14:42,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:14:42,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:14:42,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864637560] [2019-11-23 22:14:42,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:14:42,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:14:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:14:42,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:14:42,364 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-23 22:14:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:14:42,434 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-11-23 22:14:42,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:14:42,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:14:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:14:42,436 INFO L225 Difference]: With dead ends: 28 [2019-11-23 22:14:42,436 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 22:14:42,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:14:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 22:14:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2019-11-23 22:14:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 22:14:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-23 22:14:42,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-23 22:14:42,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:14:42,443 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-23 22:14:42,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:14:42,443 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-23 22:14:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:14:42,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:14:42,444 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:14:42,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:14:42,645 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:14:42,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:14:42,646 INFO L82 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2019-11-23 22:14:42,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:14:42,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984768954] [2019-11-23 22:14:42,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:14:42,654 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:14:42,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111846734] [2019-11-23 22:14:42,654 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 [2019-11-23 22:14:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:14:42,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 22:14:42,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:14:42,857 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 22:14:42,858 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:14:43,125 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 27 [2019-11-23 22:14:43,127 INFO L567 ElimStorePlain]: treesize reduction 352, result has 9.3 percent of original size [2019-11-23 22:14:43,141 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-11-23 22:14:43,141 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:14:43,153 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:14:43,153 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_5| vanished before elimination [2019-11-23 22:14:43,154 INFO L464 ElimStorePlain]: Eliminatee v_prenex_14 vanished before elimination [2019-11-23 22:14:43,154 INFO L464 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2019-11-23 22:14:43,154 INFO L464 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination [2019-11-23 22:14:43,154 INFO L464 ElimStorePlain]: Eliminatee v_prenex_4 vanished before elimination [2019-11-23 22:14:43,155 INFO L464 ElimStorePlain]: Eliminatee v_prenex_6 vanished before elimination [2019-11-23 22:14:43,155 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:14:43,156 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:441, output treesize:10 [2019-11-23 22:14:43,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:14:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:14:43,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984768954] [2019-11-23 22:14:43,362 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:14:43,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111846734] [2019-11-23 22:14:43,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:14:43,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-23 22:14:43,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646993859] [2019-11-23 22:14:43,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:14:43,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:14:43,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:14:43,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:14:43,364 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 9 states. [2019-11-23 22:14:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:14:43,582 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-11-23 22:14:43,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:14:43,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2019-11-23 22:14:43,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:14:43,584 INFO L225 Difference]: With dead ends: 36 [2019-11-23 22:14:43,584 INFO L226 Difference]: Without dead ends: 25 [2019-11-23 22:14:43,585 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:14:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-23 22:14:43,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2019-11-23 22:14:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:14:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-23 22:14:43,590 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2019-11-23 22:14:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:14:43,591 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-23 22:14:43,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:14:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-23 22:14:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:14:43,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:14:43,592 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:14:43,801 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:14:43,802 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:14:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:14:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1399075435, now seen corresponding path program 1 times [2019-11-23 22:14:43,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:14:43,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029600818] [2019-11-23 22:14:43,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:14:43,808 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:14:43,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455094416] [2019-11-23 22:14:43,808 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 [2019-11-23 22:14:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:14:43,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-23 22:14:43,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:14:43,940 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 22:14:43,940 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:14:44,375 WARN L192 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 31 [2019-11-23 22:14:44,377 INFO L567 ElimStorePlain]: treesize reduction 503, result has 10.3 percent of original size [2019-11-23 22:14:44,377 INFO L464 ElimStorePlain]: Eliminatee v_prenex_24 vanished before elimination [2019-11-23 22:14:44,377 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_6| vanished before elimination [2019-11-23 22:14:44,378 INFO L464 ElimStorePlain]: Eliminatee v_prenex_22 vanished before elimination [2019-11-23 22:14:44,378 INFO L464 ElimStorePlain]: Eliminatee v_prenex_18 vanished before elimination [2019-11-23 22:14:44,378 INFO L464 ElimStorePlain]: Eliminatee v_prenex_28 vanished before elimination [2019-11-23 22:14:44,384 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-11-23 22:14:44,385 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:14:44,402 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:14:44,402 INFO L464 ElimStorePlain]: Eliminatee v_prenex_26 vanished before elimination [2019-11-23 22:14:44,403 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:14:44,404 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:637, output treesize:32 [2019-11-23 22:14:44,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:14:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:14:44,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029600818] [2019-11-23 22:14:44,515 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:14:44,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455094416] [2019-11-23 22:14:44,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:14:44,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-23 22:14:44,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299783] [2019-11-23 22:14:44,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:14:44,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:14:44,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:14:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:14:44,517 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 10 states. [2019-11-23 22:14:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:14:44,817 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2019-11-23 22:14:44,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:14:44,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-11-23 22:14:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:14:44,818 INFO L225 Difference]: With dead ends: 37 [2019-11-23 22:14:44,818 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 22:14:44,819 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2019-11-23 22:14:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 22:14:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-11-23 22:14:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:14:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-23 22:14:44,824 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2019-11-23 22:14:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:14:44,824 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-23 22:14:44,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:14:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-23 22:14:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:14:44,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:14:44,826 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:14:45,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:14:45,035 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:14:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:14:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2141915984, now seen corresponding path program 2 times [2019-11-23 22:14:45,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:14:45,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013590704] [2019-11-23 22:14:45,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:14:45,041 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:14:45,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620491640] [2019-11-23 22:14:45,042 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-23 22:14:45,093 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:14:45,093 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:14:45,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:14:45,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:14:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:14:45,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013590704] [2019-11-23 22:14:45,114 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:14:45,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620491640] [2019-11-23 22:14:45,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:14:45,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-23 22:14:45,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556288392] [2019-11-23 22:14:45,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:14:45,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:14:45,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:14:45,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:14:45,120 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2019-11-23 22:14:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:14:45,141 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-23 22:14:45,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:14:45,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-23 22:14:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:14:45,142 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:14:45,142 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:14:45,143 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:14:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:14:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:14:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:14:45,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:14:45,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-23 22:14:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:14:45,144 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:14:45,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:14:45,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:14:45,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:14:45,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:14:45,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:14:45,514 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:14:45,515 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 26) no Hoare annotation was computed. [2019-11-23 22:14:45,515 INFO L440 ceAbstractionStarter]: At program point L19-3(lines 19 26) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start_main_~N_COL~0))) (or (and (= 1 ULTIMATE.start_main_~N_LIN~0) .cse0 (= ULTIMATE.start_main_~j~0 0)) (and (<= (select (select |#memory_int| |ULTIMATE.start_main_~#matriz~0.base|) |ULTIMATE.start_main_~#matriz~0.offset|) ULTIMATE.start_main_~maior~0) .cse0 (= ULTIMATE.start_main_~j~0 1)))) [2019-11-23 22:14:45,515 INFO L444 ceAbstractionStarter]: For program point L19-4(lines 19 26) no Hoare annotation was computed. [2019-11-23 22:14:45,515 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:14:45,516 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 22:14:45,516 INFO L447 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-11-23 22:14:45,516 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:14:45,516 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:14:45,516 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 25) no Hoare annotation was computed. [2019-11-23 22:14:45,516 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:14:45,516 INFO L444 ceAbstractionStarter]: For program point L20-2(lines 20 26) no Hoare annotation was computed. [2019-11-23 22:14:45,517 INFO L440 ceAbstractionStarter]: At program point L20-3(lines 20 26) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start_main_~N_LIN~0)) (.cse1 (= 1 ULTIMATE.start_main_~N_COL~0)) (.cse2 (= ULTIMATE.start_main_~j~0 0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~k~0 0) .cse2) (and .cse0 .cse1 (= ULTIMATE.start_main_~k~0 1) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#matriz~0.base|) (+ (* (mod ULTIMATE.start_main_~j~0 4294967296) (* (mod ULTIMATE.start_main_~N_LIN~0 4294967296) 4)) |ULTIMATE.start_main_~#matriz~0.offset|)) ULTIMATE.start_main_~maior~0) .cse2))) [2019-11-23 22:14:45,517 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:14:45,517 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-23 22:14:45,525 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-23 22:14:45,531 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-23 22:14:45,533 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-23 22:14:45,534 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-23 22:14:45,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:14:45 BoogieIcfgContainer [2019-11-23 22:14:45,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:14:45,539 INFO L168 Benchmark]: Toolchain (without parser) took 4661.32 ms. Allocated memory was 145.2 MB in the beginning and 243.8 MB in the end (delta: 98.6 MB). Free memory was 103.1 MB in the beginning and 209.2 MB in the end (delta: -106.1 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:14:45,540 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-23 22:14:45,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.83 ms. Allocated memory is still 145.2 MB. Free memory was 102.7 MB in the beginning and 92.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:14:45,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.44 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 92.6 MB in the beginning and 180.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:14:45,542 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 178.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:14:45,543 INFO L168 Benchmark]: RCFGBuilder took 304.51 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 164.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-23 22:14:45,544 INFO L168 Benchmark]: TraceAbstraction took 3927.37 ms. Allocated memory was 201.9 MB in the beginning and 243.8 MB in the end (delta: 41.9 MB). Free memory was 164.0 MB in the beginning and 209.2 MB in the end (delta: -45.3 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:14:45,548 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.83 ms. Allocated memory is still 145.2 MB. Free memory was 102.7 MB in the beginning and 92.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 124.44 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 92.6 MB in the beginning and 180.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.12 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 178.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.51 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 164.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3927.37 ms. Allocated memory was 201.9 MB in the beginning and 243.8 MB in the end (delta: 41.9 MB). Free memory was 164.0 MB in the beginning and 209.2 MB in the end (delta: -45.3 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2019-11-23 22:14:45,558 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-23 22:14:45,559 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((1 == N_LIN && 1 == N_COL) && j == 0) || ((unknown-#memory_int-unknown[matriz][matriz] <= maior && 1 == N_COL) && j == 1) - InvariantResult [Line: 20]: Loop Invariant [2019-11-23 22:14:45,560 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-23 22:14:45,560 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((1 == N_LIN && 1 == N_COL) && k == 0) && j == 0) || ((((1 == N_LIN && 1 == N_COL) && k == 1) && unknown-#memory_int-unknown[matriz][j % 4294967296 * (N_LIN % 4294967296 * 4) + matriz] <= maior) && j == 0) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 38 SDtfs, 45 SDslu, 82 SDs, 0 SdLazy, 208 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 71 HoareAnnotationTreeSize, 4 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 41 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 4344 SizeOfPredicates, 32 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 12/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...