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/eca-rers2012/Problem15_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 20:52:03,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 20:52:03,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 20:52:03,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 20:52:03,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 20:52:03,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 20:52:03,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 20:52:03,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 20:52:03,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 20:52:03,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 20:52:03,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 20:52:03,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 20:52:03,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 20:52:03,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 20:52:03,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 20:52:03,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 20:52:03,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 20:52:03,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 20:52:03,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 20:52:03,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 20:52:03,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 20:52:03,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 20:52:03,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 20:52:03,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 20:52:03,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 20:52:03,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 20:52:03,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 20:52:03,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 20:52:03,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 20:52:03,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 20:52:03,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 20:52:03,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 20:52:03,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 20:52:03,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 20:52:03,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 20:52:03,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 20:52:03,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 20:52:03,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 20:52:03,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 20:52:03,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 20:52:03,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 20:52:03,516 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 [2019-09-07 20:52:03,537 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 20:52:03,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 20:52:03,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 20:52:03,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 20:52:03,539 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 20:52:03,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 20:52:03,540 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 20:52:03,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 20:52:03,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 20:52:03,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 20:52:03,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 20:52:03,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 20:52:03,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 20:52:03,541 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 20:52:03,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 20:52:03,542 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 20:52:03,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 20:52:03,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 20:52:03,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 20:52:03,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 20:52:03,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 20:52:03,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 20:52:03,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 20:52:03,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 20:52:03,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 20:52:03,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 20:52:03,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 20:52:03,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 20:52:03,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 20:52:03,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 20:52:03,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 20:52:03,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 20:52:03,598 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 20:52:03,599 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 20:52:03,600 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57.c [2019-09-07 20:52:03,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd1376df/99a11837707e4033af97e1b2e2f4a1a1/FLAG78bdfd4c0 [2019-09-07 20:52:04,336 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 20:52:04,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label57.c [2019-09-07 20:52:04,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd1376df/99a11837707e4033af97e1b2e2f4a1a1/FLAG78bdfd4c0 [2019-09-07 20:52:04,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd1376df/99a11837707e4033af97e1b2e2f4a1a1 [2019-09-07 20:52:04,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 20:52:04,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 20:52:04,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 20:52:04,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 20:52:04,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 20:52:04,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:52:04" (1/1) ... [2019-09-07 20:52:04,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddf2541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:04, skipping insertion in model container [2019-09-07 20:52:04,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:52:04" (1/1) ... [2019-09-07 20:52:04,546 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 20:52:04,634 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 20:52:05,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:52:05,481 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 20:52:05,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:52:05,927 INFO L192 MainTranslator]: Completed translation [2019-09-07 20:52:05,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05 WrapperNode [2019-09-07 20:52:05,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 20:52:05,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 20:52:05,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 20:52:05,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 20:52:05,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (1/1) ... [2019-09-07 20:52:05,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (1/1) ... [2019-09-07 20:52:05,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (1/1) ... [2019-09-07 20:52:05,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (1/1) ... [2019-09-07 20:52:06,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (1/1) ... [2019-09-07 20:52:06,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (1/1) ... [2019-09-07 20:52:06,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (1/1) ... [2019-09-07 20:52:06,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 20:52:06,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 20:52:06,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 20:52:06,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 20:52:06,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (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 [2019-09-07 20:52:06,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 20:52:06,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 20:52:06,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 20:52:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 20:52:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 20:52:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 20:52:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 20:52:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 20:52:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 20:52:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 20:52:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 20:52:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 20:52:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 20:52:09,831 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 20:52:09,832 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 20:52:09,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:52:09 BoogieIcfgContainer [2019-09-07 20:52:09,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 20:52:09,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 20:52:09,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 20:52:09,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 20:52:09,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 08:52:04" (1/3) ... [2019-09-07 20:52:09,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3fed61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:52:09, skipping insertion in model container [2019-09-07 20:52:09,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:52:05" (2/3) ... [2019-09-07 20:52:09,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3fed61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:52:09, skipping insertion in model container [2019-09-07 20:52:09,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:52:09" (3/3) ... [2019-09-07 20:52:09,841 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label57.c [2019-09-07 20:52:09,851 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 20:52:09,859 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 20:52:09,875 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 20:52:09,909 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 20:52:09,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 20:52:09,910 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 20:52:09,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 20:52:09,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 20:52:09,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 20:52:09,911 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 20:52:09,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 20:52:09,911 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 20:52:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-09-07 20:52:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-07 20:52:09,948 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:09,949 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:09,951 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1681958245, now seen corresponding path program 1 times [2019-09-07 20:52:09,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:09,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:10,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:10,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:10,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:52:10,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:52:10,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:52:10,284 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:52:10,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:52:10,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:52:10,302 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2019-09-07 20:52:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:14,596 INFO L93 Difference]: Finished difference Result 1546 states and 2831 transitions. [2019-09-07 20:52:14,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:52:14,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-09-07 20:52:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:14,633 INFO L225 Difference]: With dead ends: 1546 [2019-09-07 20:52:14,633 INFO L226 Difference]: Without dead ends: 1028 [2019-09-07 20:52:14,648 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:52:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2019-09-07 20:52:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 700. [2019-09-07 20:52:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-09-07 20:52:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1110 transitions. [2019-09-07 20:52:14,751 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1110 transitions. Word has length 47 [2019-09-07 20:52:14,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:14,752 INFO L475 AbstractCegarLoop]: Abstraction has 700 states and 1110 transitions. [2019-09-07 20:52:14,752 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:52:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1110 transitions. [2019-09-07 20:52:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-07 20:52:14,764 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:14,765 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:14,768 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:14,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:14,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1568459753, now seen corresponding path program 1 times [2019-09-07 20:52:14,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:14,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:14,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:14,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:14,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:52:15,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:52:15,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 20:52:15,036 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 20:52:15,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 20:52:15,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 20:52:15,038 INFO L87 Difference]: Start difference. First operand 700 states and 1110 transitions. Second operand 5 states. [2019-09-07 20:52:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:19,726 INFO L93 Difference]: Finished difference Result 2057 states and 3297 transitions. [2019-09-07 20:52:19,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 20:52:19,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-09-07 20:52:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:19,737 INFO L225 Difference]: With dead ends: 2057 [2019-09-07 20:52:19,737 INFO L226 Difference]: Without dead ends: 1363 [2019-09-07 20:52:19,740 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 20:52:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2019-09-07 20:52:19,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1333. [2019-09-07 20:52:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2019-09-07 20:52:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1846 transitions. [2019-09-07 20:52:19,804 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1846 transitions. Word has length 119 [2019-09-07 20:52:19,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:19,806 INFO L475 AbstractCegarLoop]: Abstraction has 1333 states and 1846 transitions. [2019-09-07 20:52:19,806 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 20:52:19,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1846 transitions. [2019-09-07 20:52:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-07 20:52:19,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:19,809 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:19,809 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:19,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:19,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1342793735, now seen corresponding path program 1 times [2019-09-07 20:52:19,810 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:19,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:19,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:19,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:19,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:52:19,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:52:19,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:52:19,952 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:52:19,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:52:19,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:52:19,953 INFO L87 Difference]: Start difference. First operand 1333 states and 1846 transitions. Second operand 4 states. [2019-09-07 20:52:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:25,815 INFO L93 Difference]: Finished difference Result 5138 states and 7267 transitions. [2019-09-07 20:52:25,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:52:25,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-09-07 20:52:25,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:25,852 INFO L225 Difference]: With dead ends: 5138 [2019-09-07 20:52:25,852 INFO L226 Difference]: Without dead ends: 3811 [2019-09-07 20:52:25,857 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:52:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2019-09-07 20:52:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3811. [2019-09-07 20:52:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3811 states. [2019-09-07 20:52:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 4926 transitions. [2019-09-07 20:52:26,002 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 4926 transitions. Word has length 127 [2019-09-07 20:52:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:26,012 INFO L475 AbstractCegarLoop]: Abstraction has 3811 states and 4926 transitions. [2019-09-07 20:52:26,012 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:52:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 4926 transitions. [2019-09-07 20:52:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-09-07 20:52:26,022 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:26,023 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:26,023 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash 797225823, now seen corresponding path program 1 times [2019-09-07 20:52:26,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:26,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:26,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:26,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:26,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 80 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 20:52:26,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:52:26,262 INFO L223 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:52:26,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:26,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 20:52:26,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:52:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 20:52:26,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:52:26,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 20:52:26,518 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:52:26,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:52:26,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:52:26,518 INFO L87 Difference]: Start difference. First operand 3811 states and 4926 transitions. Second operand 9 states. [2019-09-07 20:52:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:31,237 INFO L93 Difference]: Finished difference Result 9005 states and 11879 transitions. [2019-09-07 20:52:31,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 20:52:31,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-09-07 20:52:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:31,266 INFO L225 Difference]: With dead ends: 9005 [2019-09-07 20:52:31,266 INFO L226 Difference]: Without dead ends: 5200 [2019-09-07 20:52:31,276 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-09-07 20:52:31,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2019-09-07 20:52:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 4873. [2019-09-07 20:52:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4873 states. [2019-09-07 20:52:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4873 states to 4873 states and 6045 transitions. [2019-09-07 20:52:31,420 INFO L78 Accepts]: Start accepts. Automaton has 4873 states and 6045 transitions. Word has length 212 [2019-09-07 20:52:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:31,421 INFO L475 AbstractCegarLoop]: Abstraction has 4873 states and 6045 transitions. [2019-09-07 20:52:31,422 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:52:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4873 states and 6045 transitions. [2019-09-07 20:52:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2019-09-07 20:52:31,432 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:31,432 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:31,432 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1229492412, now seen corresponding path program 1 times [2019-09-07 20:52:31,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:31,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:31,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:31,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:31,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-09-07 20:52:32,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:52:32,039 INFO L223 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 20:52:32,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:52:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:32,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 20:52:32,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:52:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-09-07 20:52:32,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:52:32,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-09-07 20:52:32,433 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 20:52:32,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 20:52:32,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 20:52:32,433 INFO L87 Difference]: Start difference. First operand 4873 states and 6045 transitions. Second operand 6 states. [2019-09-07 20:52:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:36,945 INFO L93 Difference]: Finished difference Result 15445 states and 19728 transitions. [2019-09-07 20:52:36,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 20:52:36,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 415 [2019-09-07 20:52:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:36,996 INFO L225 Difference]: With dead ends: 15445 [2019-09-07 20:52:36,997 INFO L226 Difference]: Without dead ends: 10578 [2019-09-07 20:52:37,013 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:52:37,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2019-09-07 20:52:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 8351. [2019-09-07 20:52:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8351 states. [2019-09-07 20:52:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8351 states to 8351 states and 10156 transitions. [2019-09-07 20:52:37,241 INFO L78 Accepts]: Start accepts. Automaton has 8351 states and 10156 transitions. Word has length 415 [2019-09-07 20:52:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:37,243 INFO L475 AbstractCegarLoop]: Abstraction has 8351 states and 10156 transitions. [2019-09-07 20:52:37,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 20:52:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 8351 states and 10156 transitions. [2019-09-07 20:52:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2019-09-07 20:52:37,262 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:37,264 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:37,264 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:37,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:37,265 INFO L82 PathProgramCache]: Analyzing trace with hash 214035699, now seen corresponding path program 1 times [2019-09-07 20:52:37,265 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:37,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:37,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:37,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:37,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-07 20:52:37,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:52:37,718 INFO L223 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:52:37,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:37,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 20:52:37,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:52:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2019-09-07 20:52:38,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:52:38,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-07 20:52:38,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 20:52:38,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 20:52:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 20:52:38,003 INFO L87 Difference]: Start difference. First operand 8351 states and 10156 transitions. Second operand 6 states. [2019-09-07 20:52:45,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:45,814 INFO L93 Difference]: Finished difference Result 25189 states and 31823 transitions. [2019-09-07 20:52:45,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 20:52:45,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 421 [2019-09-07 20:52:45,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:45,866 INFO L225 Difference]: With dead ends: 25189 [2019-09-07 20:52:45,866 INFO L226 Difference]: Without dead ends: 13351 [2019-09-07 20:52:45,897 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-09-07 20:52:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2019-09-07 20:52:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 12086. [2019-09-07 20:52:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12086 states. [2019-09-07 20:52:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12086 states to 12086 states and 13911 transitions. [2019-09-07 20:52:46,207 INFO L78 Accepts]: Start accepts. Automaton has 12086 states and 13911 transitions. Word has length 421 [2019-09-07 20:52:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:46,208 INFO L475 AbstractCegarLoop]: Abstraction has 12086 states and 13911 transitions. [2019-09-07 20:52:46,209 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 20:52:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12086 states and 13911 transitions. [2019-09-07 20:52:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2019-09-07 20:52:46,224 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:46,225 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:46,225 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:46,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1632631642, now seen corresponding path program 1 times [2019-09-07 20:52:46,225 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:46,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:46,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:46,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:46,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 20:52:46,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:52:46,642 INFO L223 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 20:52:46,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:52:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:46,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:52:46,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:52:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream Closed [2019-09-07 20:52:46,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:52:46,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:52:46,929 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:52:46,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:52:46,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:52:46,930 INFO L87 Difference]: Start difference. First operand 12086 states and 13911 transitions. Second operand 9 states. [2019-09-07 20:52:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:52,504 INFO L93 Difference]: Finished difference Result 28931 states and 35921 transitions. [2019-09-07 20:52:52,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 20:52:52,504 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 437 [2019-09-07 20:52:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:52,575 INFO L225 Difference]: With dead ends: 28931 [2019-09-07 20:52:52,575 INFO L226 Difference]: Without dead ends: 16851 [2019-09-07 20:52:52,608 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 20:52:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16851 states. [2019-09-07 20:52:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16851 to 16721. [2019-09-07 20:52:53,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16721 states. [2019-09-07 20:52:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16721 states to 16721 states and 19924 transitions. [2019-09-07 20:52:53,646 INFO L78 Accepts]: Start accepts. Automaton has 16721 states and 19924 transitions. Word has length 437 [2019-09-07 20:52:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:53,647 INFO L475 AbstractCegarLoop]: Abstraction has 16721 states and 19924 transitions. [2019-09-07 20:52:53,647 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:52:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 16721 states and 19924 transitions. [2019-09-07 20:52:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2019-09-07 20:52:53,673 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:53,674 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:53,674 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:53,675 INFO L82 PathProgramCache]: Analyzing trace with hash -388189936, now seen corresponding path program 1 times [2019-09-07 20:52:53,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:53,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:53,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:53,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:53,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2019-09-07 20:52:54,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:52:54,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 20:52:54,101 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 20:52:54,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 20:52:54,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 20:52:54,102 INFO L87 Difference]: Start difference. First operand 16721 states and 19924 transitions. Second operand 3 states. [2019-09-07 20:52:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:56,116 INFO L93 Difference]: Finished difference Result 37166 states and 44632 transitions. [2019-09-07 20:52:56,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 20:52:56,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 521 [2019-09-07 20:52:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:56,288 INFO L225 Difference]: With dead ends: 37166 [2019-09-07 20:52:56,288 INFO L226 Difference]: Without dead ends: 20455 [2019-09-07 20:52:56,328 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 20:52:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20455 states. [2019-09-07 20:52:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20455 to 19211. [2019-09-07 20:52:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19211 states. [2019-09-07 20:52:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19211 states to 19211 states and 22812 transitions. [2019-09-07 20:52:56,691 INFO L78 Accepts]: Start accepts. Automaton has 19211 states and 22812 transitions. Word has length 521 [2019-09-07 20:52:56,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:52:56,692 INFO L475 AbstractCegarLoop]: Abstraction has 19211 states and 22812 transitions. [2019-09-07 20:52:56,692 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 20:52:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 19211 states and 22812 transitions. [2019-09-07 20:52:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2019-09-07 20:52:56,723 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:52:56,724 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:52:56,724 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:52:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:52:56,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1946356846, now seen corresponding path program 1 times [2019-09-07 20:52:56,725 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:52:56,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:52:56,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:56,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:52:56,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:52:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:52:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2019-09-07 20:52:57,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:52:57,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 20:52:57,329 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 20:52:57,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 20:52:57,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 20:52:57,330 INFO L87 Difference]: Start difference. First operand 19211 states and 22812 transitions. Second operand 3 states. [2019-09-07 20:52:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:52:59,664 INFO L93 Difference]: Finished difference Result 44007 states and 52543 transitions. [2019-09-07 20:52:59,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 20:52:59,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2019-09-07 20:52:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:52:59,723 INFO L225 Difference]: With dead ends: 44007 [2019-09-07 20:52:59,723 INFO L226 Difference]: Without dead ends: 22582 [2019-09-07 20:52:59,778 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 20:52:59,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22582 states. [2019-09-07 20:53:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22582 to 22582. [2019-09-07 20:53:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22582 states. [2019-09-07 20:53:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22582 states to 22582 states and 26142 transitions. [2019-09-07 20:53:00,140 INFO L78 Accepts]: Start accepts. Automaton has 22582 states and 26142 transitions. Word has length 581 [2019-09-07 20:53:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:53:00,141 INFO L475 AbstractCegarLoop]: Abstraction has 22582 states and 26142 transitions. [2019-09-07 20:53:00,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 20:53:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 22582 states and 26142 transitions. [2019-09-07 20:53:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2019-09-07 20:53:00,191 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:53:00,191 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:53:00,192 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:53:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:53:00,193 INFO L82 PathProgramCache]: Analyzing trace with hash 260851424, now seen corresponding path program 1 times [2019-09-07 20:53:00,193 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:53:00,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:53:00,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:53:00,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:53:00,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:53:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:53:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 477 proven. 2 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2019-09-07 20:53:00,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:53:00,945 INFO L223 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:53:00,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:53:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:53:01,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 20:53:01,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:53:01,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:53:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-09-07 20:53:01,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:53:01,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 20:53:01,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:53:01,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:53:01,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:53:01,967 INFO L87 Difference]: Start difference. First operand 22582 states and 26142 transitions. Second operand 9 states. [2019-09-07 20:53:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:53:07,644 INFO L93 Difference]: Finished difference Result 40715 states and 46617 transitions. [2019-09-07 20:53:07,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-07 20:53:07,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 672 [2019-09-07 20:53:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:53:07,698 INFO L225 Difference]: With dead ends: 40715 [2019-09-07 20:53:07,698 INFO L226 Difference]: Without dead ends: 18143 [2019-09-07 20:53:07,749 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2019-09-07 20:53:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2019-09-07 20:53:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 16638. [2019-09-07 20:53:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16638 states. [2019-09-07 20:53:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16638 states to 16638 states and 17913 transitions. [2019-09-07 20:53:08,103 INFO L78 Accepts]: Start accepts. Automaton has 16638 states and 17913 transitions. Word has length 672 [2019-09-07 20:53:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:53:08,104 INFO L475 AbstractCegarLoop]: Abstraction has 16638 states and 17913 transitions. [2019-09-07 20:53:08,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:53:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 16638 states and 17913 transitions. [2019-09-07 20:53:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2019-09-07 20:53:08,132 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:53:08,134 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:53:08,134 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:53:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:53:08,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1025236449, now seen corresponding path program 1 times [2019-09-07 20:53:08,135 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:53:08,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:53:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:53:08,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:53:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:53:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:53:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 334 proven. 267 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2019-09-07 20:53:08,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:53:08,860 INFO L223 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:53:08,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:53:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:53:09,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:53:09,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:53:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-09-07 20:53:09,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:53:09,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:53:09,362 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:53:09,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:53:09,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:53:09,362 INFO L87 Difference]: Start difference. First operand 16638 states and 17913 transitions. Second operand 9 states. [2019-09-07 20:53:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:53:13,530 INFO L93 Difference]: Finished difference Result 34210 states and 37856 transitions. [2019-09-07 20:53:13,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 20:53:13,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 758 [2019-09-07 20:53:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:53:13,590 INFO L225 Difference]: With dead ends: 34210 [2019-09-07 20:53:13,590 INFO L226 Difference]: Without dead ends: 17885 [2019-09-07 20:53:13,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-09-07 20:53:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17885 states. [2019-09-07 20:53:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17885 to 16601. [2019-09-07 20:53:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16601 states. [2019-09-07 20:53:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16601 states to 16601 states and 18430 transitions. [2019-09-07 20:53:13,905 INFO L78 Accepts]: Start accepts. Automaton has 16601 states and 18430 transitions. Word has length 758 [2019-09-07 20:53:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:53:13,906 INFO L475 AbstractCegarLoop]: Abstraction has 16601 states and 18430 transitions. [2019-09-07 20:53:13,906 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:53:13,906 INFO L276 IsEmpty]: Start isEmpty. Operand 16601 states and 18430 transitions. [2019-09-07 20:53:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2019-09-07 20:53:13,939 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:53:13,940 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:53:13,940 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:53:13,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:53:13,941 INFO L82 PathProgramCache]: Analyzing trace with hash -790326693, now seen corresponding path program 1 times [2019-09-07 20:53:13,941 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:53:13,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:53:13,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:53:13,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:53:13,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:53:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:53:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 171 proven. 793 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 20:53:15,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:53:15,722 INFO L223 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:53:15,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:53:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:53:15,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 20:53:15,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:53:16,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:53:16,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:53:25,525 WARN L188 SmtUtils]: Spent 9.37 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-07 20:53:25,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:53:26,713 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_2 Int)) (let ((.cse0 (mod v_prenex_2 299926))) (and (= 0 .cse0) (<= (+ v_prenex_2 44) 0) (<= .cse0 (+ c_~a0~0 300074))))) (exists ((v_~a0~0_834 Int)) (let ((.cse1 (mod v_~a0~0_834 299926))) (and (<= (+ v_~a0~0_834 44) 0) (< v_~a0~0_834 0) (not (= 0 .cse1)) (<= .cse1 (+ c_~a0~0 600000)))))) is different from true [2019-09-07 20:53:26,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:53:26,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:53:33,867 WARN L188 SmtUtils]: Spent 995.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-09-07 20:53:37,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:53:37,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:53:37,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:53:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 579 refuted. 0 times theorem prover too weak. 488 trivial. 15 not checked. [2019-09-07 20:53:43,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:53:43,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-09-07 20:53:43,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 20:53:43,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 20:53:43,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=262, Unknown=6, NotChecked=32, Total=342 [2019-09-07 20:53:43,249 INFO L87 Difference]: Start difference. First operand 16601 states and 18430 transitions. Second operand 19 states. [2019-09-07 20:53:46,525 WARN L188 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 29 [2019-09-07 20:54:20,656 WARN L188 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2019-09-07 20:56:57,042 WARN L188 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2019-09-07 20:57:39,740 WARN L188 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 60 [2019-09-07 20:57:51,115 WARN L188 SmtUtils]: Spent 8.66 s on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-07 20:58:14,467 WARN L188 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2019-09-07 20:58:43,835 WARN L188 SmtUtils]: Spent 3.76 s on a formula simplification that was a NOOP. DAG size: 38 [2019-09-07 20:58:59,290 WARN L188 SmtUtils]: Spent 9.21 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2019-09-07 20:59:07,559 WARN L188 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 36 [2019-09-07 20:59:20,756 WARN L188 SmtUtils]: Spent 9.04 s on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2019-09-07 20:59:39,212 WARN L188 SmtUtils]: Spent 3.00 s on a formula simplification that was a NOOP. DAG size: 39 [2019-09-07 20:59:44,762 WARN L188 SmtUtils]: Spent 3.14 s on a formula simplification that was a NOOP. DAG size: 35 [2019-09-07 20:59:55,728 WARN L188 SmtUtils]: Spent 10.76 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2019-09-07 21:01:11,263 WARN L188 SmtUtils]: Spent 4.90 s on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 21:01:31,112 WARN L188 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2019-09-07 21:01:44,301 WARN L188 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 35 [2019-09-07 21:01:52,989 WARN L188 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 41 [2019-09-07 21:02:27,370 WARN L188 SmtUtils]: Spent 10.47 s on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-07 21:02:47,458 WARN L188 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-07 21:02:53,843 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-07 21:03:41,300 WARN L188 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2019-09-07 21:04:04,023 WARN L188 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-07 21:04:09,604 WARN L188 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 21:04:22,163 WARN L188 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2019-09-07 21:04:30,314 WARN L188 SmtUtils]: Spent 4.01 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 21:05:16,829 WARN L188 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 25 [2019-09-07 21:05:25,915 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 37 [2019-09-07 21:05:28,861 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-07 21:05:54,328 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 21:06:16,782 WARN L188 SmtUtils]: Spent 7.87 s on a formula simplification that was a NOOP. DAG size: 62