/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:26:38,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:26:38,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:26:38,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 01:26:38,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:26:38,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:26:38,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:26:38,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:26:38,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:26:38,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:26:38,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:26:38,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:26:38,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:26:38,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:26:38,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:26:38,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:26:38,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:26:38,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:26:38,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:26:38,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:26:38,673 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 [2020-07-21 01:26:38,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:26:38,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:26:38,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:26:38,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:26:38,706 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:26:38,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:26:38,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:26:38,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:26:38,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:26:38,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:26:38,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:26:38,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:26:38,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:26:38,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:26:38,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:26:38,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:26:38,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:26:38,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:26:38,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:26:38,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:26:38,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:26:38,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:26:38,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:26:38,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:26:38,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:26:38,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:26:38,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:26:38,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:26:38,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:26:38,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:26:39,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:26:39,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:26:39,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:26:39,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:26:39,060 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:26:39,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-07-21 01:26:39,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61172dca1/b9d5b1becead417d98f5af81f1b916a8/FLAGe299106aa [2020-07-21 01:26:39,704 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:26:39,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-07-21 01:26:39,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61172dca1/b9d5b1becead417d98f5af81f1b916a8/FLAGe299106aa [2020-07-21 01:26:39,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61172dca1/b9d5b1becead417d98f5af81f1b916a8 [2020-07-21 01:26:39,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:26:39,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:26:39,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:26:39,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:26:39,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:26:39,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:26:39" (1/1) ... [2020-07-21 01:26:39,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211823ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:39, skipping insertion in model container [2020-07-21 01:26:39,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:26:39" (1/1) ... [2020-07-21 01:26:39,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:26:40,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:26:40,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:26:40,536 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:26:40,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:26:40,790 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:26:40,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40 WrapperNode [2020-07-21 01:26:40,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:26:40,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:26:40,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:26:40,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:26:40,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (1/1) ... [2020-07-21 01:26:40,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (1/1) ... [2020-07-21 01:26:40,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (1/1) ... [2020-07-21 01:26:40,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (1/1) ... [2020-07-21 01:26:40,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (1/1) ... [2020-07-21 01:26:40,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (1/1) ... [2020-07-21 01:26:40,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (1/1) ... [2020-07-21 01:26:40,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:26:40,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:26:40,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:26:40,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:26:40,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (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 [2020-07-21 01:26:40,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:26:40,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:26:40,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:26:40,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:26:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:26:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:26:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:26:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:26:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:26:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:26:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:26:42,265 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:26:42,265 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:26:42,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:26:42 BoogieIcfgContainer [2020-07-21 01:26:42,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:26:42,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:26:42,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:26:42,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:26:42,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:26:39" (1/3) ... [2020-07-21 01:26:42,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6292e165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:26:42, skipping insertion in model container [2020-07-21 01:26:42,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:26:40" (2/3) ... [2020-07-21 01:26:42,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6292e165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:26:42, skipping insertion in model container [2020-07-21 01:26:42,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:26:42" (3/3) ... [2020-07-21 01:26:42,294 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-07-21 01:26:42,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:26:42,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:26:42,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:26:42,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:26:42,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:26:42,355 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:26:42,355 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:26:42,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:26:42,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:26:42,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:26:42,356 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:26:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:26:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 01:26:42,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:26:42,391 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:26:42,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:26:42,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:26:42,398 INFO L82 PathProgramCache]: Analyzing trace with hash -824341666, now seen corresponding path program 1 times [2020-07-21 01:26:42,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:26:42,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628107168] [2020-07-21 01:26:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:26:42,542 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:26:42,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:26:42,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:26:42,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:26:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:26:42,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:26:42,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628107168] [2020-07-21 01:26:42,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:26:42,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:26:42,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143825290] [2020-07-21 01:26:42,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:26:42,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:26:42,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:26:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:26:42,654 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:26:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:26:43,730 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 01:26:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:26:43,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-07-21 01:26:43,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:26:43,763 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:26:43,763 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:26:43,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:26:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:26:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:26:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:26:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 01:26:43,861 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 65 [2020-07-21 01:26:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:26:43,862 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 01:26:43,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:26:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 01:26:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-21 01:26:43,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:26:43,880 INFO L422 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, 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] [2020-07-21 01:26:44,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:26:44,095 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:26:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:26:44,095 INFO L82 PathProgramCache]: Analyzing trace with hash 177708450, now seen corresponding path program 1 times [2020-07-21 01:26:44,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:26:44,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924714588] [2020-07-21 01:26:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:26:44,179 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:26:44,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:26:44,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:26:44,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:26:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:26:44,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:26:44,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924714588] [2020-07-21 01:26:44,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:26:44,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:26:44,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947764829] [2020-07-21 01:26:44,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:26:44,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:26:44,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:26:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:26:44,260 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 01:26:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:26:45,319 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 01:26:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:26:45,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-07-21 01:26:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:26:45,338 INFO L225 Difference]: With dead ends: 890 [2020-07-21 01:26:45,338 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 01:26:45,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:26:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 01:26:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 01:26:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 01:26:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 776 transitions. [2020-07-21 01:26:45,405 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 776 transitions. Word has length 139 [2020-07-21 01:26:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:26:45,406 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 776 transitions. [2020-07-21 01:26:45,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:26:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 776 transitions. [2020-07-21 01:26:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-21 01:26:45,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:26:45,409 INFO L422 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, 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] [2020-07-21 01:26:45,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:26:45,624 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:26:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:26:45,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1533828447, now seen corresponding path program 1 times [2020-07-21 01:26:45,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:26:45,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136137227] [2020-07-21 01:26:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:26:45,710 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:26:45,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:26:45,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 01:26:45,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:26:45,767 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:26:45,769 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:26:58,192 WARN L193 SmtUtils]: Spent 12.38 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 01:26:58,234 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:26:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:26:58,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:26:58,540 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:26:58,593 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:26:58,595 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:26:58,596 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:26:58,597 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:26:58,599 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:26:58,601 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:26:58,602 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:26:58,604 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:27:04,443 WARN L193 SmtUtils]: Spent 5.81 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-07-21 01:27:04,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136137227] [2020-07-21 01:27:04,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:04,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-21 01:27:04,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747536776] [2020-07-21 01:27:04,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:04,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:04,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:04,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:04,449 INFO L87 Difference]: Start difference. First operand 590 states and 776 transitions. Second operand 6 states. [2020-07-21 01:27:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:20,820 INFO L93 Difference]: Finished difference Result 1650 states and 2213 transitions. [2020-07-21 01:27:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:20,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-07-21 01:27:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:20,832 INFO L225 Difference]: With dead ends: 1650 [2020-07-21 01:27:20,832 INFO L226 Difference]: Without dead ends: 1039 [2020-07-21 01:27:20,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:27:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-07-21 01:27:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1029. [2020-07-21 01:27:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-07-21 01:27:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1362 transitions. [2020-07-21 01:27:20,921 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1362 transitions. Word has length 144 [2020-07-21 01:27:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:20,922 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1362 transitions. [2020-07-21 01:27:20,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1362 transitions. [2020-07-21 01:27:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-21 01:27:20,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:20,927 INFO L422 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, 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] [2020-07-21 01:27:21,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:21,140 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1165965249, now seen corresponding path program 1 times [2020-07-21 01:27:21,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:21,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125465241] [2020-07-21 01:27:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:21,249 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:21,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:21,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:21,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:21,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:21,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125465241] [2020-07-21 01:27:21,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:21,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:21,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596201650] [2020-07-21 01:27:21,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:21,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:21,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:21,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:21,309 INFO L87 Difference]: Start difference. First operand 1029 states and 1362 transitions. Second operand 5 states. [2020-07-21 01:27:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:22,511 INFO L93 Difference]: Finished difference Result 2676 states and 3750 transitions. [2020-07-21 01:27:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:22,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-07-21 01:27:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:22,525 INFO L225 Difference]: With dead ends: 2676 [2020-07-21 01:27:22,526 INFO L226 Difference]: Without dead ends: 1796 [2020-07-21 01:27:22,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2020-07-21 01:27:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1770. [2020-07-21 01:27:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-07-21 01:27:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2311 transitions. [2020-07-21 01:27:22,610 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2311 transitions. Word has length 160 [2020-07-21 01:27:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:22,611 INFO L479 AbstractCegarLoop]: Abstraction has 1770 states and 2311 transitions. [2020-07-21 01:27:22,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2311 transitions. [2020-07-21 01:27:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-21 01:27:22,614 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:22,614 INFO L422 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, 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] [2020-07-21 01:27:22,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:22,828 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:22,829 INFO L82 PathProgramCache]: Analyzing trace with hash 986405998, now seen corresponding path program 1 times [2020-07-21 01:27:22,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:22,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665597438] [2020-07-21 01:27:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:22,909 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:22,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:22,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:27:22,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:22,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:22,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665597438] [2020-07-21 01:27:22,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:22,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:22,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931928138] [2020-07-21 01:27:22,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:22,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:22,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:22,981 INFO L87 Difference]: Start difference. First operand 1770 states and 2311 transitions. Second operand 5 states. [2020-07-21 01:27:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:24,214 INFO L93 Difference]: Finished difference Result 3427 states and 4528 transitions. [2020-07-21 01:27:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:24,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-07-21 01:27:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:24,234 INFO L225 Difference]: With dead ends: 3427 [2020-07-21 01:27:24,235 INFO L226 Difference]: Without dead ends: 1806 [2020-07-21 01:27:24,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-07-21 01:27:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1796. [2020-07-21 01:27:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1796 states. [2020-07-21 01:27:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2352 transitions. [2020-07-21 01:27:24,309 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2352 transitions. Word has length 161 [2020-07-21 01:27:24,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:24,310 INFO L479 AbstractCegarLoop]: Abstraction has 1796 states and 2352 transitions. [2020-07-21 01:27:24,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2352 transitions. [2020-07-21 01:27:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-07-21 01:27:24,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:24,313 INFO L422 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, 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] [2020-07-21 01:27:24,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:24,529 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash 973193769, now seen corresponding path program 1 times [2020-07-21 01:27:24,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:24,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351580263] [2020-07-21 01:27:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:24,646 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:24,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:24,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:27:24,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:24,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:24,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351580263] [2020-07-21 01:27:24,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:24,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 01:27:24,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557706529] [2020-07-21 01:27:24,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:27:24,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:24,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:27:24,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:24,865 INFO L87 Difference]: Start difference. First operand 1796 states and 2352 transitions. Second operand 4 states. [2020-07-21 01:27:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:25,651 INFO L93 Difference]: Finished difference Result 2088 states and 2770 transitions. [2020-07-21 01:27:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:27:25,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-07-21 01:27:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:25,667 INFO L225 Difference]: With dead ends: 2088 [2020-07-21 01:27:25,668 INFO L226 Difference]: Without dead ends: 2086 [2020-07-21 01:27:25,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2020-07-21 01:27:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1796. [2020-07-21 01:27:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1796 states. [2020-07-21 01:27:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2397 transitions. [2020-07-21 01:27:25,734 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2397 transitions. Word has length 180 [2020-07-21 01:27:25,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:25,735 INFO L479 AbstractCegarLoop]: Abstraction has 1796 states and 2397 transitions. [2020-07-21 01:27:25,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:27:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2397 transitions. [2020-07-21 01:27:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-21 01:27:25,742 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:25,743 INFO L422 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:25,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:25,957 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:25,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:25,958 INFO L82 PathProgramCache]: Analyzing trace with hash 347509109, now seen corresponding path program 1 times [2020-07-21 01:27:25,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:25,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737252254] [2020-07-21 01:27:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:26,077 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:26,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:26,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:26,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:26,117 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:27:26,118 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:26,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:26,304 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:26,305 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:26,306 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:27:26,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:26,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737252254] [2020-07-21 01:27:26,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:26,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:27:26,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467708554] [2020-07-21 01:27:26,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:26,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:26,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:26,484 INFO L87 Difference]: Start difference. First operand 1796 states and 2397 transitions. Second operand 6 states. [2020-07-21 01:27:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:27,650 INFO L93 Difference]: Finished difference Result 3906 states and 5340 transitions. [2020-07-21 01:27:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:27:27,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2020-07-21 01:27:27,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:27,665 INFO L225 Difference]: With dead ends: 3906 [2020-07-21 01:27:27,666 INFO L226 Difference]: Without dead ends: 2259 [2020-07-21 01:27:27,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 502 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:27:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2020-07-21 01:27:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2249. [2020-07-21 01:27:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-07-21 01:27:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2938 transitions. [2020-07-21 01:27:27,738 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2938 transitions. Word has length 254 [2020-07-21 01:27:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:27,739 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2938 transitions. [2020-07-21 01:27:27,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:27,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2938 transitions. [2020-07-21 01:27:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 01:27:27,750 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:27,751 INFO L422 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, 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, 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] [2020-07-21 01:27:27,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:27,964 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:27,964 INFO L82 PathProgramCache]: Analyzing trace with hash 74824814, now seen corresponding path program 1 times [2020-07-21 01:27:27,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:27,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149441468] [2020-07-21 01:27:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:28,076 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:28,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:28,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:28,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:28,106 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:27:28,109 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-21 01:27:28,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:28,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:28,288 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:28,290 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:27:28,290 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 246 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 01:27:28,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149441468] [2020-07-21 01:27:28,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:28,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:27:28,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254596125] [2020-07-21 01:27:28,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:28,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:28,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:28,546 INFO L87 Difference]: Start difference. First operand 2249 states and 2938 transitions. Second operand 6 states. [2020-07-21 01:27:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:29,762 INFO L93 Difference]: Finished difference Result 4820 states and 6468 transitions. [2020-07-21 01:27:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:27:29,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 331 [2020-07-21 01:27:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:29,763 INFO L225 Difference]: With dead ends: 4820 [2020-07-21 01:27:29,763 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:27:29,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:27:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:27:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:27:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:27:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:27:29,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 331 [2020-07-21 01:27:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:29,776 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:27:29,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:27:29,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:27:29,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:29,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:27:30,804 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 65 [2020-07-21 01:27:30,969 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-07-21 01:27:31,095 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-07-21 01:27:31,099 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:27:31,100 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|) (or (< |old(~a19~0)| 7) (< 6 ~a19~0))) [2020-07-21 01:27:31,100 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:27:31,100 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:27:31,100 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,100 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,101 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,101 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,101 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,101 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,101 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:27:31,101 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:27:31,101 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:27:31,102 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:27:31,103 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,103 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,103 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,103 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,103 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,103 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:27:31,103 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:27:31,104 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:27:31,105 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:27:31,105 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:27:31,105 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:27:31,105 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 181) no Hoare annotation was computed. [2020-07-21 01:27:31,105 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:27:31,105 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,105 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:27:31,106 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:27:31,107 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:27:31,107 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:27:31,107 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:27:31,107 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:27:31,107 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:27:31,107 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,107 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,108 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,108 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,108 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,108 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:27:31,108 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:27:31,108 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:27:31,108 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:27:31,109 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:27:31,109 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:27:31,109 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:27:31,109 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:27:31,109 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:27:31,109 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:27:31,109 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:27:31,110 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:27:31,111 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,112 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,112 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,112 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,112 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,112 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,112 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,112 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:27:31,113 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:27:31,114 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:27:31,114 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:27:31,114 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:27:31,114 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:27:31,114 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,114 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:27:31,115 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:27:31,116 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:27:31,116 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:27:31,116 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:27:31,116 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:27:31,116 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:27:31,116 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:27:31,116 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:27:31,117 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:27:31,117 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:27:31,117 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:27:31,117 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,117 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,117 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,117 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:27:31,118 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:27:31,119 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:27:31,119 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:27:31,119 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:27:31,119 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:27:31,119 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:27:31,119 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse4 (not (<= |old(~a19~0)| 9))) (.cse0 (<= ~a10~0 |old(~a10~0)|)) (.cse1 (<= |old(~a10~0)| ~a10~0)) (.cse2 (<= ~a19~0 |old(~a19~0)|)) (.cse5 (< 6 ~a19~0)) (.cse3 (= ~a1~0 |old(~a1~0)|))) (and (or (not (<= |old(~a1~0)| 23)) (and .cse0 .cse1 .cse2 .cse3) .cse4) (or .cse4 (and .cse0 .cse1 .cse2 .cse3 (or (< |old(~a19~0)| 7) .cse5)) (not (<= 2 |old(~a10~0)|))) (or (= 8 ~a19~0) (not (= 1 |old(~a10~0)|)) (not (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (= 8 |old(~a19~0)|)) (forall ((v_prenex_3 Int)) (or (not (<= (+ (div v_prenex_3 5) 331501) |old(~a1~0)|)) (not (<= 0 v_prenex_3)) (not (<= 23 v_prenex_3))))) (or (not (< 6 |old(~a19~0)|)) (not (<= |old(~a10~0)| 2)) (and .cse0 .cse1 .cse2 .cse5 .cse3)))) [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,120 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:27:31,121 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,122 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:27:31,123 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:27:31,124 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:27:31,125 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:27:31,126 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:27:31,127 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:27:31,127 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:27:31,127 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:27:31,127 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (= 0 ~a12~0) (= 23 ~a1~0) (< 6 ~a19~0)) [2020-07-21 01:27:31,127 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:27:31,127 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:27:31,128 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 6 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (< 6 ~a19~0) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 01:27:31,128 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:27:31,128 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a10~0 2))) (or (not (< 6 |old(~a19~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (and .cse0 (< 6 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)) (and (<= ~a1~0 23) .cse0))) [2020-07-21 01:27:31,128 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:27:31,128 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:27:31,129 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a10~0 2))) (or (not (< 6 |old(~a19~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (and .cse0 (< 6 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)) (and (<= ~a1~0 23) .cse0))) [2020-07-21 01:27:31,129 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:27:31,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:27:31 BoogieIcfgContainer [2020-07-21 01:27:31,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:27:31,163 INFO L168 Benchmark]: Toolchain (without parser) took 51220.58 ms. Allocated memory was 134.7 MB in the beginning and 486.5 MB in the end (delta: 351.8 MB). Free memory was 98.4 MB in the beginning and 361.6 MB in the end (delta: -263.3 MB). Peak memory consumption was 317.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:31,164 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 01:27:31,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 845.14 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 98.1 MB in the beginning and 168.5 MB in the end (delta: -70.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:31,166 INFO L168 Benchmark]: Boogie Preprocessor took 102.09 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 163.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:31,167 INFO L168 Benchmark]: RCFGBuilder took 1390.85 ms. Allocated memory was 201.9 MB in the beginning and 228.1 MB in the end (delta: 26.2 MB). Free memory was 163.8 MB in the beginning and 179.1 MB in the end (delta: -15.3 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:31,168 INFO L168 Benchmark]: TraceAbstraction took 48874.30 ms. Allocated memory was 228.1 MB in the beginning and 486.5 MB in the end (delta: 258.5 MB). Free memory was 179.1 MB in the beginning and 361.6 MB in the end (delta: -182.5 MB). Peak memory consumption was 304.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:31,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 845.14 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 98.1 MB in the beginning and 168.5 MB in the end (delta: -70.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.09 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 163.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1390.85 ms. Allocated memory was 201.9 MB in the beginning and 228.1 MB in the end (delta: 26.2 MB). Free memory was 163.8 MB in the beginning and 179.1 MB in the end (delta: -15.3 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48874.30 ms. Allocated memory was 228.1 MB in the beginning and 486.5 MB in the end (delta: 258.5 MB). Free memory was 179.1 MB in the beginning and 361.6 MB in the end (delta: -182.5 MB). Peak memory consumption was 304.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 181]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: (((((((!(6 < \old(a19)) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(0 == a12)) || (a10 <= 2 && 6 < a19)) || !(14 == a4)) || !(\old(a19) <= 9)) || (a19 <= 9 && 2 <= a10)) || (a1 <= 23 && a10 <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 47.6s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 2174 SDslu, 235 SDs, 0 SdLazy, 5336 SolverSat, 959 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 21.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2273 GetRequests, 2223 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2249occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 358 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 82 PreInvPairs, 136 NumberOfFragments, 288 HoareAnnotationTreeSize, 82 FomulaSimplifications, 2294 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1555 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 1434 NumberOfCodeBlocks, 1059 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2188 ConstructedInterpolants, 23 QuantifiedInterpolants, 1761805 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2115 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 1347/1502 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...