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 -i ../../../trunk/examples/svcomp/array-multidimensional/copy-2-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:15:15,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:15:15,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:15:15,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:15:15,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:15:15,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:15:15,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:15:15,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:15:15,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:15:15,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:15:15,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:15:15,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:15:15,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:15:15,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:15:15,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:15:15,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:15:15,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:15:15,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:15:15,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:15:15,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:15:15,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:15:15,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:15:15,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:15:15,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:15:15,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 16:15:15,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 16:15:15,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 16:15:15,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 16:15:15,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 16:15:15,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 16:15:15,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 16:15:15,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 16:15:15,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 16:15:15,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 16:15:15,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 16:15:15,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 16:15:15,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 16:15:15,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 16:15:15,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:15:15,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:15:15,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:15:15,789 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 [2019-09-16 16:15:15,802 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:15:15,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:15:15,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:15:15,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:15:15,804 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:15:15,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:15:15,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:15:15,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:15:15,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:15:15,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:15:15,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:15:15,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:15:15,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:15:15,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:15:15,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:15:15,806 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:15:15,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:15:15,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:15:15,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:15:15,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:15:15,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:15:15,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:15:15,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:15:15,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:15:15,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:15:15,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:15:15,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:15:15,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:15:15,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:15:15,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:15:15,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:15:15,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:15:15,856 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:15:15,857 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:15:15,857 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-2-u.c [2019-09-16 16:15:15,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22de30ec7/4cf875e33d1048b289dcf3b319384602/FLAGbd32c088a [2019-09-16 16:15:16,338 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:15:16,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-2-u.c [2019-09-16 16:15:16,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22de30ec7/4cf875e33d1048b289dcf3b319384602/FLAGbd32c088a [2019-09-16 16:15:16,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22de30ec7/4cf875e33d1048b289dcf3b319384602 [2019-09-16 16:15:16,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:15:16,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:15:16,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:15:16,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:15:16,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:15:16,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:15:16" (1/1) ... [2019-09-16 16:15:16,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f6b6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:16, skipping insertion in model container [2019-09-16 16:15:16,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:15:16" (1/1) ... [2019-09-16 16:15:16,752 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:15:16,772 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:15:16,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:15:16,973 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:15:16,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:15:17,097 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:15:17,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17 WrapperNode [2019-09-16 16:15:17,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:15:17,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:15:17,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:15:17,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:15:17,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (1/1) ... [2019-09-16 16:15:17,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (1/1) ... [2019-09-16 16:15:17,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (1/1) ... [2019-09-16 16:15:17,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (1/1) ... [2019-09-16 16:15:17,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (1/1) ... [2019-09-16 16:15:17,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (1/1) ... [2019-09-16 16:15:17,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (1/1) ... [2019-09-16 16:15:17,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:15:17,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:15:17,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:15:17,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:15:17,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (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 [2019-09-16 16:15:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:15:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:15:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:15:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 16:15:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 16:15:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:15:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:15:17,496 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:15:17,496 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-16 16:15:17,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:15:17 BoogieIcfgContainer [2019-09-16 16:15:17,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:15:17,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:15:17,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:15:17,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:15:17,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:15:16" (1/3) ... [2019-09-16 16:15:17,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42039d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:15:17, skipping insertion in model container [2019-09-16 16:15:17,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:15:17" (2/3) ... [2019-09-16 16:15:17,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42039d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:15:17, skipping insertion in model container [2019-09-16 16:15:17,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:15:17" (3/3) ... [2019-09-16 16:15:17,510 INFO L109 eAbstractionObserver]: Analyzing ICFG copy-2-u.c [2019-09-16 16:15:17,518 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:15:17,527 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:15:17,545 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:15:17,571 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:15:17,572 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:15:17,572 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:15:17,572 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:15:17,572 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:15:17,572 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:15:17,573 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:15:17,573 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:15:17,573 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:15:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-16 16:15:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 16:15:17,593 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:15:17,594 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:15:17,596 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:15:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:15:17,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1035913628, now seen corresponding path program 1 times [2019-09-16 16:15:17,602 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:15:17,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:15:17,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:17,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:15:17,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:17,688 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:15:17,688 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:15:17,688 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-16 16:15:17,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:15:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:15:17,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-16 16:15:17,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:15:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-16 16:15:17,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:15:17,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:15:17,821 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:15:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:15:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:15:17,838 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2019-09-16 16:15:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:15:17,940 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2019-09-16 16:15:17,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:15:17,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-16 16:15:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:15:17,952 INFO L225 Difference]: With dead ends: 57 [2019-09-16 16:15:17,952 INFO L226 Difference]: Without dead ends: 28 [2019-09-16 16:15:17,956 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:15:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-16 16:15:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-09-16 16:15:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-16 16:15:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-09-16 16:15:18,002 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2019-09-16 16:15:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:15:18,003 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-09-16 16:15:18,003 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:15:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-09-16 16:15:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-16 16:15:18,004 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:15:18,005 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:15:18,005 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:15:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:15:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash 573516244, now seen corresponding path program 1 times [2019-09-16 16:15:18,006 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:15:18,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:15:18,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:15:18,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,018 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:15:18,018 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:15:18,019 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-16 16:15:18,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:15:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:15:18,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-16 16:15:18,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:15:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:15:18,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:15:18,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 16:15:18,115 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:15:18,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:15:18,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:15:18,117 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2019-09-16 16:15:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:15:18,218 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2019-09-16 16:15:18,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:15:18,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-09-16 16:15:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:15:18,222 INFO L225 Difference]: With dead ends: 53 [2019-09-16 16:15:18,222 INFO L226 Difference]: Without dead ends: 34 [2019-09-16 16:15:18,224 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:15:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-16 16:15:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-09-16 16:15:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-16 16:15:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-09-16 16:15:18,247 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2019-09-16 16:15:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:15:18,248 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-09-16 16:15:18,248 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:15:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-09-16 16:15:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 16:15:18,251 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:15:18,251 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:15:18,251 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:15:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:15:18,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1173975853, now seen corresponding path program 1 times [2019-09-16 16:15:18,252 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:15:18,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:15:18,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:15:18,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,277 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:15:18,277 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:15:18,277 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-16 16:15:18,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:15:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:15:18,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-16 16:15:18,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:15:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:15:18,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:15:18,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-09-16 16:15:18,383 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:15:18,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:15:18,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:15:18,384 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2019-09-16 16:15:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:15:18,483 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-09-16 16:15:18,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:15:18,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-16 16:15:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:15:18,485 INFO L225 Difference]: With dead ends: 61 [2019-09-16 16:15:18,485 INFO L226 Difference]: Without dead ends: 39 [2019-09-16 16:15:18,486 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:15:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-16 16:15:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2019-09-16 16:15:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-16 16:15:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2019-09-16 16:15:18,495 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 20 [2019-09-16 16:15:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:15:18,495 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-09-16 16:15:18,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:15:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2019-09-16 16:15:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-16 16:15:18,497 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:15:18,497 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:15:18,497 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:15:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:15:18,498 INFO L82 PathProgramCache]: Analyzing trace with hash 488343988, now seen corresponding path program 2 times [2019-09-16 16:15:18,498 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:15:18,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:15:18,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:15:18,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,506 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:15:18,506 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:15:18,507 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-16 16:15:18,536 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-16 16:15:18,584 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-09-16 16:15:18,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:15:18,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-16 16:15:18,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:15:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-16 16:15:18,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:15:18,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 16:15:18,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:15:18,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:15:18,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:15:18,612 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 4 states. [2019-09-16 16:15:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:15:18,683 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-09-16 16:15:18,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:15:18,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-09-16 16:15:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:15:18,685 INFO L225 Difference]: With dead ends: 68 [2019-09-16 16:15:18,685 INFO L226 Difference]: Without dead ends: 52 [2019-09-16 16:15:18,686 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:15:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-16 16:15:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 35. [2019-09-16 16:15:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-16 16:15:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-09-16 16:15:18,695 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 21 [2019-09-16 16:15:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:15:18,696 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-09-16 16:15:18,696 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:15:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-09-16 16:15:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-16 16:15:18,697 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:15:18,697 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:15:18,698 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:15:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:15:18,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1641208904, now seen corresponding path program 1 times [2019-09-16 16:15:18,698 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:15:18,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:15:18,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:15:18,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,706 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:15:18,706 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:15:18,707 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-16 16:15:18,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:15:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:15:18,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-16 16:15:18,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:15:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-16 16:15:18,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:15:18,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-09-16 16:15:18,814 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 16:15:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 16:15:18,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:15:18,815 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 6 states. [2019-09-16 16:15:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:15:18,915 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2019-09-16 16:15:18,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:15:18,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-09-16 16:15:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:15:18,917 INFO L225 Difference]: With dead ends: 71 [2019-09-16 16:15:18,917 INFO L226 Difference]: Without dead ends: 43 [2019-09-16 16:15:18,918 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:15:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-16 16:15:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-09-16 16:15:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-16 16:15:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-09-16 16:15:18,927 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 26 [2019-09-16 16:15:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:15:18,927 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-09-16 16:15:18,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 16:15:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-09-16 16:15:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-16 16:15:18,928 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:15:18,929 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:15:18,929 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:15:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:15:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1483393922, now seen corresponding path program 2 times [2019-09-16 16:15:18,930 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:15:18,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:15:18,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:15:18,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:18,938 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:15:18,938 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:15:18,939 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-16 16:15:18,960 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:15:18,986 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:15:18,986 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:15:18,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-16 16:15:18,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:15:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-16 16:15:19,025 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:15:19,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-09-16 16:15:19,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:15:19,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:15:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:15:19,031 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2019-09-16 16:15:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:15:19,152 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2019-09-16 16:15:19,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:15:19,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-09-16 16:15:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:15:19,155 INFO L225 Difference]: With dead ends: 113 [2019-09-16 16:15:19,156 INFO L226 Difference]: Without dead ends: 86 [2019-09-16 16:15:19,157 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:15:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-09-16 16:15:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 52. [2019-09-16 16:15:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-09-16 16:15:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2019-09-16 16:15:19,178 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 28 [2019-09-16 16:15:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:15:19,180 INFO L475 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2019-09-16 16:15:19,180 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:15:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2019-09-16 16:15:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-16 16:15:19,182 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:15:19,182 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:15:19,183 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:15:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:15:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash -347991136, now seen corresponding path program 3 times [2019-09-16 16:15:19,184 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:15:19,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:15:19,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:19,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:15:19,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:15:19,197 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:15:19,197 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:15:19,197 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-16 16:15:19,216 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:15:19,290 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-09-16 16:15:19,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:15:19,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 51 conjunts are in the unsatisfiable core [2019-09-16 16:15:19,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:15:19,347 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-09-16 16:15:19,349 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,357 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:19,357 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,358 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-09-16 16:15:19,407 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2019-09-16 16:15:19,407 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,417 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:19,418 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,419 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:14 [2019-09-16 16:15:19,470 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 39 [2019-09-16 16:15:19,470 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,489 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:19,490 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,490 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2019-09-16 16:15:19,531 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,536 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 64 [2019-09-16 16:15:19,537 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,559 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:19,560 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,560 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:78, output treesize:74 [2019-09-16 16:15:19,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,614 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,616 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,617 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,618 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,622 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2019-09-16 16:15:19,624 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,641 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:19,642 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,642 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2019-09-16 16:15:19,697 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,714 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,715 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,716 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,717 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,718 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,786 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:19,786 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 272 [2019-09-16 16:15:19,791 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:19,865 INFO L567 ElimStorePlain]: treesize reduction 278, result has 24.7 percent of original size [2019-09-16 16:15:19,866 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:15:19,867 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:95, output treesize:91 [2019-09-16 16:15:19,953 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,955 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:19,960 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:20,121 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-09-16 16:15:20,122 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:20,122 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 108 treesize of output 519 [2019-09-16 16:15:20,128 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:20,263 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 56 [2019-09-16 16:15:20,263 INFO L567 ElimStorePlain]: treesize reduction 646, result has 16.4 percent of original size [2019-09-16 16:15:20,265 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-16 16:15:20,265 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:131, output treesize:127 [2019-09-16 16:15:20,376 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:20,377 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:20,378 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:20,378 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:20,382 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:20,383 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:20,560 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-09-16 16:15:20,561 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:20,562 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 108 treesize of output 519 [2019-09-16 16:15:20,566 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:20,678 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 56 [2019-09-16 16:15:20,679 INFO L567 ElimStorePlain]: treesize reduction 646, result has 16.4 percent of original size [2019-09-16 16:15:20,680 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-16 16:15:20,681 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:131, output treesize:127 [2019-09-16 16:15:30,152 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:30,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:30,154 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:15:30,156 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2019-09-16 16:15:30,157 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:15:30,170 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:15:30,171 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:15:30,171 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:81, output treesize:3 [2019-09-16 16:15:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 33 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-16 16:15:30,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:15:30,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2019-09-16 16:15:30,240 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-16 16:15:30,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-16 16:15:30,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=268, Unknown=5, NotChecked=0, Total=342 [2019-09-16 16:15:30,241 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 19 states. [2019-09-16 16:15:33,649 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-16 16:16:08,425 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-09-16 16:16:13,280 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-09-16 16:16:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:16:39,159 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2019-09-16 16:16:39,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-16 16:16:39,159 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2019-09-16 16:16:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:16:39,161 INFO L225 Difference]: With dead ends: 88 [2019-09-16 16:16:39,161 INFO L226 Difference]: Without dead ends: 86 [2019-09-16 16:16:39,162 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 49.9s TimeCoverageRelationStatistics Valid=222, Invalid=946, Unknown=22, NotChecked=0, Total=1190 [2019-09-16 16:16:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-09-16 16:16:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2019-09-16 16:16:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-09-16 16:16:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2019-09-16 16:16:39,177 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 40 [2019-09-16 16:16:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:16:39,177 INFO L475 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2019-09-16 16:16:39,177 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-16 16:16:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2019-09-16 16:16:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-16 16:16:39,179 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:16:39,179 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:16:39,179 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:16:39,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:16:39,180 INFO L82 PathProgramCache]: Analyzing trace with hash 169283640, now seen corresponding path program 1 times [2019-09-16 16:16:39,180 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:16:39,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:16:39,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:16:39,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:16:39,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:16:39,187 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:16:39,188 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:16:39,188 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-16 16:16:39,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:16:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:16:39,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-16 16:16:39,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:16:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-16 16:16:39,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:16:39,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-16 16:16:39,311 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 16:16:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 16:16:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:16:39,312 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 7 states. [2019-09-16 16:16:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:16:39,439 INFO L93 Difference]: Finished difference Result 128 states and 156 transitions. [2019-09-16 16:16:39,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 16:16:39,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-09-16 16:16:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:16:39,445 INFO L225 Difference]: With dead ends: 128 [2019-09-16 16:16:39,445 INFO L226 Difference]: Without dead ends: 74 [2019-09-16 16:16:39,446 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:16:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-09-16 16:16:39,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2019-09-16 16:16:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-09-16 16:16:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2019-09-16 16:16:39,476 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 61 [2019-09-16 16:16:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:16:39,476 INFO L475 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2019-09-16 16:16:39,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 16:16:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2019-09-16 16:16:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-16 16:16:39,482 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:16:39,482 INFO L407 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:16:39,482 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:16:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:16:39,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1745666676, now seen corresponding path program 2 times [2019-09-16 16:16:39,483 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:16:39,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:16:39,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:16:39,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:16:39,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:16:39,501 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:16:39,501 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:16:39,501 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:16:39,531 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-16 16:16:39,575 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:16:39,575 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:16:39,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-16 16:16:39,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:16:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Exception during sending of exit command (exit): Broken pipe [2019-09-16 16:16:39,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:16:39,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-16 16:16:39,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 16:16:39,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 16:16:39,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-09-16 16:16:39,655 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 8 states. [2019-09-16 16:16:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:16:39,788 INFO L93 Difference]: Finished difference Result 141 states and 171 transitions. [2019-09-16 16:16:39,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 16:16:39,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-09-16 16:16:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:16:39,790 INFO L225 Difference]: With dead ends: 141 [2019-09-16 16:16:39,790 INFO L226 Difference]: Without dead ends: 81 [2019-09-16 16:16:39,791 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-09-16 16:16:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-09-16 16:16:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2019-09-16 16:16:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-09-16 16:16:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2019-09-16 16:16:39,823 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 65 [2019-09-16 16:16:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:16:39,828 INFO L475 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2019-09-16 16:16:39,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 16:16:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2019-09-16 16:16:39,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-16 16:16:39,830 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:16:39,830 INFO L407 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:16:39,830 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:16:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:16:39,831 INFO L82 PathProgramCache]: Analyzing trace with hash -386524872, now seen corresponding path program 3 times [2019-09-16 16:16:39,831 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:16:39,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:16:39,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:16:39,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:16:39,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:16:39,841 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:16:39,841 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:16:39,841 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:16:39,865 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-16 16:16:40,289 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-09-16 16:16:40,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:16:40,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 92 conjunts are in the unsatisfiable core [2019-09-16 16:16:40,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:16:40,302 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-09-16 16:16:40,303 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,311 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,311 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,312 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-09-16 16:16:40,411 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2019-09-16 16:16:40,411 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,431 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,432 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,432 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:20 [2019-09-16 16:16:40,457 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-16 16:16:40,457 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,466 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,466 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,467 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-09-16 16:16:40,485 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2019-09-16 16:16:40,486 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,496 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,497 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,497 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:14 [2019-09-16 16:16:40,506 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2019-09-16 16:16:40,506 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,518 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,519 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,519 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:14 [2019-09-16 16:16:40,532 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2019-09-16 16:16:40,533 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,543 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,543 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,544 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:14 [2019-09-16 16:16:40,550 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2019-09-16 16:16:40,550 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,566 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,566 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,567 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:14 [2019-09-16 16:16:40,574 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2019-09-16 16:16:40,575 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,588 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,588 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,589 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:14 [2019-09-16 16:16:40,604 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 39 [2019-09-16 16:16:40,605 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,619 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,620 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,620 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2019-09-16 16:16:40,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,656 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,657 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 64 [2019-09-16 16:16:40,658 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,675 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,675 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,675 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:78, output treesize:74 [2019-09-16 16:16:40,719 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,720 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,721 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,724 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,725 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,726 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,729 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 105 [2019-09-16 16:16:40,730 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,750 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,750 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,750 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:109 [2019-09-16 16:16:40,809 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,810 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,811 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,811 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,812 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,814 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,814 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,817 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,821 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 130 [2019-09-16 16:16:40,822 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,851 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,851 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,851 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2019-09-16 16:16:40,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,912 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,920 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,921 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,921 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,922 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,923 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,925 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,926 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,927 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,929 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,930 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,932 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,938 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,939 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,940 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:40,943 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 99 [2019-09-16 16:16:40,944 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,962 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:40,962 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:16:40,963 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:85 [2019-09-16 16:16:41,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,013 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,015 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,016 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,017 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,018 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,018 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,019 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,020 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,021 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,021 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,022 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,023 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,023 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,024 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,025 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,026 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,139 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-09-16 16:16:41,140 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:41,141 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 438 [2019-09-16 16:16:41,145 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:41,263 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2019-09-16 16:16:41,264 INFO L567 ElimStorePlain]: treesize reduction 470, result has 20.5 percent of original size [2019-09-16 16:16:41,265 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:16:41,265 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:125, output treesize:121 [2019-09-16 16:16:41,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,355 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,356 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,358 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,359 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,359 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,360 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,361 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,362 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,364 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,364 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,365 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,366 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,367 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,368 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,369 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,370 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,371 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,372 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,373 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:41,642 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-09-16 16:16:41,642 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:16:41,643 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 22 case distinctions, treesize of input 142 treesize of output 805 [2019-09-16 16:16:41,649 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:41,853 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 67 [2019-09-16 16:16:41,853 INFO L567 ElimStorePlain]: treesize reduction 1058, result has 12.9 percent of original size [2019-09-16 16:16:41,855 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:16:41,855 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:160, output treesize:156 [2019-09-16 16:16:43,921 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 69 [2019-09-16 16:16:43,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,932 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,934 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,935 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,936 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,937 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,938 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,939 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,940 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,941 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,943 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,944 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,945 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,946 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,947 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,948 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,949 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:43,950 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:44,676 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 185 [2019-09-16 16:16:44,677 INFO L341 Elim1Store]: treesize reduction 246, result has 77.5 percent of original size [2019-09-16 16:16:44,678 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 21 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 177 treesize of output 984 [2019-09-16 16:16:44,684 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:44,950 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 74 [2019-09-16 16:16:44,951 INFO L567 ElimStorePlain]: treesize reduction 1334, result has 12.5 percent of original size [2019-09-16 16:16:44,952 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:16:44,952 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:195, output treesize:191 [2019-09-16 16:16:47,054 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 76 [2019-09-16 16:16:47,068 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,070 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,072 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,073 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,075 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,077 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,078 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,088 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,090 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,091 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,091 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:47,092 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:48,115 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 291 DAG size of output: 217 [2019-09-16 16:16:48,116 INFO L341 Elim1Store]: treesize reduction 556, result has 64.3 percent of original size [2019-09-16 16:16:48,117 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 21 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 52 case distinctions, treesize of input 212 treesize of output 1163 [2019-09-16 16:16:48,126 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:48,453 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 80 [2019-09-16 16:16:48,453 INFO L567 ElimStorePlain]: treesize reduction 1610, result has 12.3 percent of original size [2019-09-16 16:16:48,455 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:16:48,455 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:230, output treesize:226 [2019-09-16 16:16:50,552 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 82 [2019-09-16 16:16:50,581 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,582 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,583 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,584 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,585 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,586 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,589 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,590 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,591 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,596 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,596 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,597 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:50,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:16:51,919 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 370 DAG size of output: 247 [2019-09-16 16:16:51,919 INFO L341 Elim1Store]: treesize reduction 912, result has 55.2 percent of original size [2019-09-16 16:16:51,921 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 21 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 70 case distinctions, treesize of input 243 treesize of output 1302 [2019-09-16 16:16:51,932 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:16:52,277 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 89 [2019-09-16 16:16:52,278 INFO L567 ElimStorePlain]: treesize reduction 1826, result has 12.5 percent of original size [2019-09-16 16:16:52,279 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-16 16:16:52,280 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:266, output treesize:262 [2019-09-16 16:17:07,447 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_~#A~0.base_BEFORE_CALL_1| Int) (v_main_~i~0_24 Int) (v_main_~j~0_53 Int) (|v_main_~#B~0.base_BEFORE_CALL_1| Int) (v_main_~j~0_57 Int)) (let ((.cse3 (* 4000 v_main_~i~0_24)) (.cse4 (* 4 v_main_~j~0_57)) (.cse0 (select |c_#memory_int| |v_main_~#B~0.base_BEFORE_CALL_1|)) (.cse1 (select |c_#memory_int| |v_main_~#A~0.base_BEFORE_CALL_1|))) (and (not (= |v_main_~#A~0.base_BEFORE_CALL_1| |v_main_~#B~0.base_BEFORE_CALL_1|)) (= (select .cse0 12) (select .cse1 12)) (let ((.cse2 (+ .cse3 .cse4 (- 8)))) (= (select .cse0 .cse2) (select .cse1 .cse2))) (<= v_main_~j~0_57 (+ v_main_~j~0_53 4)) (= (select .cse1 16) (select .cse0 16)) (= (select .cse1 8) (select .cse0 8)) (= (select .cse1 0) (select .cse0 0)) (let ((.cse5 (+ .cse3 (* 4 v_main_~j~0_53)))) (= (select .cse0 .cse5) (select .cse1 .cse5))) (<= 999 v_main_~i~0_24) (let ((.cse6 (+ .cse3 .cse4 (- 12)))) (= (select .cse1 .cse6) (select .cse0 .cse6))) (<= 999 v_main_~j~0_57) (let ((.cse7 (+ .cse3 .cse4))) (= (select .cse1 .cse7) (select .cse0 .cse7))) (let ((.cse8 (+ .cse3 .cse4 (- 4)))) (= (select .cse1 .cse8) (select .cse0 .cse8))) (= (select .cse0 4) (select .cse1 4))))) is different from true [2019-09-16 16:17:13,473 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 151 DAG size of output: 96 [2019-09-16 16:17:19,219 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~i~0_24 Int) (v_main_~j~0_53 Int) (|v_main_~#B~0.base_BEFORE_CALL_2| Int) (|v_main_~#A~0.base_BEFORE_CALL_2| Int) (v_main_~j~0_57 Int)) (let ((.cse0 (select |c_#memory_int| |v_main_~#A~0.base_BEFORE_CALL_2|)) (.cse2 (select |c_#memory_int| |v_main_~#B~0.base_BEFORE_CALL_2|)) (.cse3 (* 4000 v_main_~i~0_24)) (.cse4 (* 4 v_main_~j~0_57))) (and (let ((.cse1 (+ .cse3 .cse4 (- 4)))) (= (select .cse0 .cse1) (select .cse2 .cse1))) (let ((.cse5 (+ .cse3 (* 4 v_main_~j~0_53)))) (= (select .cse2 .cse5) (select .cse0 .cse5))) (= (select .cse2 12) (select .cse0 12)) (= (select .cse0 16) (select .cse2 16)) (= (select .cse2 4) (select .cse0 4)) (let ((.cse6 (+ .cse3 .cse4))) (= (select .cse2 .cse6) (select .cse0 .cse6))) (not (= |v_main_~#A~0.base_BEFORE_CALL_2| |v_main_~#B~0.base_BEFORE_CALL_2|)) (<= v_main_~j~0_57 (+ v_main_~j~0_53 4)) (= (select .cse2 0) (select .cse0 0)) (let ((.cse7 (+ .cse3 .cse4 (- 8)))) (= (select .cse2 .cse7) (select .cse0 .cse7))) (= (select .cse2 8) (select .cse0 8)) (<= 999 v_main_~i~0_24) (let ((.cse8 (+ .cse3 .cse4 (- 12)))) (= (select .cse0 .cse8) (select .cse2 .cse8))) (<= 999 v_main_~j~0_57)))) is different from true [2019-09-16 16:17:25,678 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_~#B~0.base_BEFORE_CALL_3| Int) (v_main_~i~0_24 Int) (v_main_~j~0_53 Int) (|v_main_~#A~0.base_BEFORE_CALL_3| Int) (v_main_~j~0_57 Int)) (let ((.cse0 (select |c_#memory_int| |v_main_~#B~0.base_BEFORE_CALL_3|)) (.cse1 (select |c_#memory_int| |v_main_~#A~0.base_BEFORE_CALL_3|)) (.cse3 (* 4000 v_main_~i~0_24)) (.cse4 (* 4 v_main_~j~0_57))) (and (= (select .cse0 0) (select .cse1 0)) (= (select .cse1 4) (select .cse0 4)) (= (select .cse1 16) (select .cse0 16)) (let ((.cse2 (+ .cse3 .cse4 (- 12)))) (= (select .cse0 .cse2) (select .cse1 .cse2))) (= (select .cse0 12) (select .cse1 12)) (let ((.cse5 (+ .cse3 (* 4 v_main_~j~0_53)))) (= (select .cse1 .cse5) (select .cse0 .cse5))) (let ((.cse6 (+ .cse3 .cse4))) (= (select .cse1 .cse6) (select .cse0 .cse6))) (<= v_main_~j~0_57 (+ v_main_~j~0_53 4)) (= (select .cse0 8) (select .cse1 8)) (let ((.cse7 (+ .cse3 .cse4 (- 8)))) (= (select .cse0 .cse7) (select .cse1 .cse7))) (not (= |v_main_~#A~0.base_BEFORE_CALL_3| |v_main_~#B~0.base_BEFORE_CALL_3|)) (<= 999 v_main_~i~0_24) (<= 999 v_main_~j~0_57) (let ((.cse8 (+ .cse3 .cse4 (- 4)))) (= (select .cse0 .cse8) (select .cse1 .cse8)))))) is different from true [2019-09-16 16:17:30,033 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 97 [2019-09-16 16:17:34,242 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,245 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,246 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,247 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,248 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,249 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,250 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,252 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,253 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,254 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,256 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,257 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,259 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,262 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,263 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,266 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,271 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,274 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,276 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,281 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,283 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:17:34,342 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:17:34,343 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 42 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 8 case distinctions, treesize of input 191 treesize of output 203 [2019-09-16 16:17:34,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:17:34,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:17:34,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:17:34,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:17:34,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:17:34,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:17:34,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:17:34,355 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:17:34,366 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:17:34,366 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:17:34,367 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:206, output treesize:3 [2019-09-16 16:17:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 19 proven. 112 refuted. 0 times theorem prover too weak. 24 trivial. 18 not checked. [2019-09-16 16:17:34,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:17:34,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2019-09-16 16:17:34,593 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-16 16:17:34,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-16 16:17:34,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=802, Unknown=15, NotChecked=186, Total=1190 [2019-09-16 16:17:34,596 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand 35 states. [2019-09-16 16:17:36,293 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2019-09-16 16:17:39,050 WARN L191 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2019-09-16 16:17:55,613 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 114 [2019-09-16 16:18:02,505 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 120 [2019-09-16 16:18:09,611 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 124 [2019-09-16 16:18:12,166 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 144 [2019-09-16 16:18:20,800 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2019-09-16 16:18:36,142 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 68 [2019-09-16 16:18:38,186 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 70 [2019-09-16 16:19:12,096 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 68 [2019-09-16 16:19:21,880 WARN L191 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 127 [2019-09-16 16:19:23,997 WARN L191 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 130 [2019-09-16 16:19:36,304 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 101 [2019-09-16 16:19:36,953 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 95 [2019-09-16 16:19:38,031 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 98 [2019-09-16 16:20:30,389 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-16 16:20:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:20:41,675 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2019-09-16 16:20:41,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-09-16 16:20:41,675 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 69 [2019-09-16 16:20:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:20:41,677 INFO L225 Difference]: With dead ends: 119 [2019-09-16 16:20:41,677 INFO L226 Difference]: Without dead ends: 117 [2019-09-16 16:20:41,679 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 155.4s TimeCoverageRelationStatistics Valid=515, Invalid=2305, Unknown=54, NotChecked=318, Total=3192 [2019-09-16 16:20:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-09-16 16:20:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 89. [2019-09-16 16:20:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-09-16 16:20:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2019-09-16 16:20:41,702 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 69 [2019-09-16 16:20:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:20:41,703 INFO L475 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2019-09-16 16:20:41,703 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-16 16:20:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2019-09-16 16:20:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-16 16:20:41,704 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:20:41,705 INFO L407 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:20:41,705 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:20:41,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:20:41,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1446251464, now seen corresponding path program 4 times [2019-09-16 16:20:41,705 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:20:41,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:20:41,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:20:41,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:20:41,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:20:41,713 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:20:41,714 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:20:41,714 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-16 16:20:41,743 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:20:41,784 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-16 16:20:41,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:20:41,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-16 16:20:41,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:20:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2019-09-16 16:20:41,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:20:41,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-09-16 16:20:41,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-16 16:20:41,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-16 16:20:41,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-09-16 16:20:41,889 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand 11 states. [2019-09-16 16:20:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:20:42,185 INFO L93 Difference]: Finished difference Result 225 states and 270 transitions. [2019-09-16 16:20:42,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-16 16:20:42,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2019-09-16 16:20:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:20:42,187 INFO L225 Difference]: With dead ends: 225 [2019-09-16 16:20:42,187 INFO L226 Difference]: Without dead ends: 159 [2019-09-16 16:20:42,188 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2019-09-16 16:20:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-09-16 16:20:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 105. [2019-09-16 16:20:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-09-16 16:20:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2019-09-16 16:20:42,212 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 83 [2019-09-16 16:20:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:20:42,212 INFO L475 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2019-09-16 16:20:42,213 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-16 16:20:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2019-09-16 16:20:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-16 16:20:42,214 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:20:42,214 INFO L407 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:20:42,214 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:20:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:20:42,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1485779110, now seen corresponding path program 5 times [2019-09-16 16:20:42,215 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:20:42,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:20:42,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:20:42,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:20:42,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:20:42,224 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 16:20:42,224 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 16:20:42,224 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 16:20:42,248 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1