/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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:29:19,184 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:29:19,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:29:19,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:29:19,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:29:19,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:29:19,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:29:19,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:29:19,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:29:19,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:29:19,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:29:19,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:29:19,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:29:19,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:29:19,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:29:19,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:29:19,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:29:19,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:29:19,239 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 01:29:19,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:29:19,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:29:19,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:29:19,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:29:19,256 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:29:19,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:29:19,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:29:19,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:29:19,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:29:19,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:29:19,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:29:19,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:29:19,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:29:19,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:29:19,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:29:19,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:29:19,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:29:19,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:29:19,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:29:19,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:29:19,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:29:19,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:29:19,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:29:19,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:29:19,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:29:19,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:29:19,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:19,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:29:19,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:29:19,261 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 01:29:19,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:29:19,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:29:19,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:29:19,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:29:19,560 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:29:19,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-21 01:29:19,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b654479/5f814a83e3054486a09089a55a8d45a1/FLAG96e275d30 [2020-07-21 01:29:20,119 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:29:20,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-21 01:29:20,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b654479/5f814a83e3054486a09089a55a8d45a1/FLAG96e275d30 [2020-07-21 01:29:20,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b654479/5f814a83e3054486a09089a55a8d45a1 [2020-07-21 01:29:20,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:29:20,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:29:20,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:29:20,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:29:20,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:29:20,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:29:20" (1/1) ... [2020-07-21 01:29:20,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5914c42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:20, skipping insertion in model container [2020-07-21 01:29:20,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:29:20" (1/1) ... [2020-07-21 01:29:20,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:29:20,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:29:21,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:29:21,166 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:29:21,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:29:21,269 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:29:21,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21 WrapperNode [2020-07-21 01:29:21,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:29:21,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:29:21,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:29:21,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:29:21,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (1/1) ... [2020-07-21 01:29:21,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (1/1) ... [2020-07-21 01:29:21,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (1/1) ... [2020-07-21 01:29:21,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (1/1) ... [2020-07-21 01:29:21,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (1/1) ... [2020-07-21 01:29:21,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (1/1) ... [2020-07-21 01:29:21,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (1/1) ... [2020-07-21 01:29:21,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:29:21,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:29:21,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:29:21,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:29:21,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (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 01:29:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:29:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:29:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:29:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:29:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:29:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:29:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:29:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:29:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:29:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:29:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:29:22,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:29:22,674 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:29:22,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:29:22 BoogieIcfgContainer [2020-07-21 01:29:22,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:29:22,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:29:22,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:29:22,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:29:22,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:29:20" (1/3) ... [2020-07-21 01:29:22,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:29:22, skipping insertion in model container [2020-07-21 01:29:22,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:29:21" (2/3) ... [2020-07-21 01:29:22,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:29:22, skipping insertion in model container [2020-07-21 01:29:22,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:29:22" (3/3) ... [2020-07-21 01:29:22,697 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-07-21 01:29:22,711 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:29:22,723 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:29:22,742 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:29:22,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:29:22,782 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:29:22,782 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:29:22,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:29:22,783 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:29:22,783 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:29:22,783 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:29:22,783 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:29:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:29:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 01:29:22,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:22,829 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] [2020-07-21 01:29:22,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:22,837 INFO L82 PathProgramCache]: Analyzing trace with hash -576444522, now seen corresponding path program 1 times [2020-07-21 01:29:22,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:22,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63871527] [2020-07-21 01:29:22,847 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 01:29:23,004 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:29:23,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:23,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:29:23,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:23,079 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 01:29:23,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:29:23,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63871527] [2020-07-21 01:29:23,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:29:23,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:29:23,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268227655] [2020-07-21 01:29:23,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:29:23,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:23,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:29:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:29:23,108 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:29:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:29:24,175 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 01:29:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:29:24,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 01:29:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:29:24,196 INFO L225 Difference]: With dead ends: 571 [2020-07-21 01:29:24,196 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:29:24,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 01:29:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:29:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:29:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:29:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-21 01:29:24,320 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 55 [2020-07-21 01:29:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:29:24,322 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-21 01:29:24,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:29:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-21 01:29:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 01:29:24,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:24,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:24,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:24,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:24,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:24,554 INFO L82 PathProgramCache]: Analyzing trace with hash -913027315, now seen corresponding path program 1 times [2020-07-21 01:29:24,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:24,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640940391] [2020-07-21 01:29:24,556 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 01:29:24,657 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:29:24,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:24,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:29:24,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:29:24,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:29:24,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640940391] [2020-07-21 01:29:24,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:29:24,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:29:24,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856564556] [2020-07-21 01:29:24,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:29:24,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:24,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:29:24,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:29:24,734 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2020-07-21 01:29:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:29:25,736 INFO L93 Difference]: Finished difference Result 737 states and 1125 transitions. [2020-07-21 01:29:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:29:25,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-07-21 01:29:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:29:25,745 INFO L225 Difference]: With dead ends: 737 [2020-07-21 01:29:25,745 INFO L226 Difference]: Without dead ends: 449 [2020-07-21 01:29:25,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 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 01:29:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-07-21 01:29:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2020-07-21 01:29:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-07-21 01:29:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 634 transitions. [2020-07-21 01:29:25,781 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 634 transitions. Word has length 128 [2020-07-21 01:29:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:29:25,781 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 634 transitions. [2020-07-21 01:29:25,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:29:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 634 transitions. [2020-07-21 01:29:25,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-21 01:29:25,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:25,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:25,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:25,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:25,999 INFO L82 PathProgramCache]: Analyzing trace with hash 952189433, now seen corresponding path program 1 times [2020-07-21 01:29:26,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:26,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055370780] [2020-07-21 01:29:26,001 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 01:29:26,104 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:29:26,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:26,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:29:26,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:29:26,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:29:26,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055370780] [2020-07-21 01:29:26,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:29:26,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:29:26,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566484856] [2020-07-21 01:29:26,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:29:26,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:26,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:29:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:29:26,166 INFO L87 Difference]: Start difference. First operand 443 states and 634 transitions. Second operand 3 states. [2020-07-21 01:29:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:29:26,824 INFO L93 Difference]: Finished difference Result 1172 states and 1736 transitions. [2020-07-21 01:29:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:29:26,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-21 01:29:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:29:26,831 INFO L225 Difference]: With dead ends: 1172 [2020-07-21 01:29:26,831 INFO L226 Difference]: Without dead ends: 878 [2020-07-21 01:29:26,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 01:29:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-21 01:29:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-21 01:29:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-21 01:29:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1251 transitions. [2020-07-21 01:29:26,885 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1251 transitions. Word has length 134 [2020-07-21 01:29:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:29:26,886 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1251 transitions. [2020-07-21 01:29:26,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:29:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1251 transitions. [2020-07-21 01:29:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-21 01:29:26,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:26,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:27,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:27,105 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash -296475546, now seen corresponding path program 1 times [2020-07-21 01:29:27,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:27,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059117023] [2020-07-21 01:29:27,106 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 01:29:27,207 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:29:27,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:27,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:29:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:29:27,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:29:27,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059117023] [2020-07-21 01:29:27,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:29:27,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:29:27,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686216324] [2020-07-21 01:29:27,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:29:27,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:27,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:29:27,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:29:27,304 INFO L87 Difference]: Start difference. First operand 878 states and 1251 transitions. Second operand 5 states. [2020-07-21 01:29:28,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:29:28,362 INFO L93 Difference]: Finished difference Result 1492 states and 2221 transitions. [2020-07-21 01:29:28,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:29:28,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-07-21 01:29:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:29:28,369 INFO L225 Difference]: With dead ends: 1492 [2020-07-21 01:29:28,369 INFO L226 Difference]: Without dead ends: 763 [2020-07-21 01:29:28,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:29:28,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-07-21 01:29:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 592. [2020-07-21 01:29:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-07-21 01:29:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 718 transitions. [2020-07-21 01:29:28,398 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 718 transitions. Word has length 167 [2020-07-21 01:29:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:29:28,399 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 718 transitions. [2020-07-21 01:29:28,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:29:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 718 transitions. [2020-07-21 01:29:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-21 01:29:28,403 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:28,403 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, 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] [2020-07-21 01:29:28,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:28,617 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1123243390, now seen corresponding path program 1 times [2020-07-21 01:29:28,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:28,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333484733] [2020-07-21 01:29:28,619 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 01:29:28,769 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:29:28,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:28,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 01:29:28,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-07-21 01:29:28,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:29:29,021 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:29:29,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:29:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 01:29:29,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333484733] [2020-07-21 01:29:29,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:29:29,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2020-07-21 01:29:29,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305312592] [2020-07-21 01:29:29,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:29:29,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:29:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:29:29,107 INFO L87 Difference]: Start difference. First operand 592 states and 718 transitions. Second operand 3 states. [2020-07-21 01:29:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:29:29,891 INFO L93 Difference]: Finished difference Result 1474 states and 1852 transitions. [2020-07-21 01:29:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:29:29,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-21 01:29:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:29:29,899 INFO L225 Difference]: With dead ends: 1474 [2020-07-21 01:29:29,899 INFO L226 Difference]: Without dead ends: 1031 [2020-07-21 01:29:29,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 464 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:29:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-07-21 01:29:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 886. [2020-07-21 01:29:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-07-21 01:29:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1101 transitions. [2020-07-21 01:29:29,940 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1101 transitions. Word has length 237 [2020-07-21 01:29:29,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:29:29,941 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1101 transitions. [2020-07-21 01:29:29,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:29:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1101 transitions. [2020-07-21 01:29:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-21 01:29:29,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:29,951 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, 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 01:29:30,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:30,166 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash -385944642, now seen corresponding path program 1 times [2020-07-21 01:29:30,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:30,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589723572] [2020-07-21 01:29:30,167 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 01:29:30,296 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:29:30,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:30,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:29:30,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 01:29:30,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:29:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 01:29:30,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589723572] [2020-07-21 01:29:30,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:29:30,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2020-07-21 01:29:30,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394709456] [2020-07-21 01:29:30,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:29:30,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:30,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:29:30,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:29:30,578 INFO L87 Difference]: Start difference. First operand 886 states and 1101 transitions. Second operand 5 states. [2020-07-21 01:29:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:29:31,504 INFO L93 Difference]: Finished difference Result 2070 states and 2674 transitions. [2020-07-21 01:29:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:29:31,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-07-21 01:29:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:29:31,535 INFO L225 Difference]: With dead ends: 2070 [2020-07-21 01:29:31,535 INFO L226 Difference]: Without dead ends: 1333 [2020-07-21 01:29:31,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:29:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-21 01:29:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1186. [2020-07-21 01:29:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-07-21 01:29:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1489 transitions. [2020-07-21 01:29:31,580 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1489 transitions. Word has length 251 [2020-07-21 01:29:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:29:31,581 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1489 transitions. [2020-07-21 01:29:31,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:29:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1489 transitions. [2020-07-21 01:29:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-07-21 01:29:31,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:31,589 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:29:31,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:31,804 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:31,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1746099686, now seen corresponding path program 1 times [2020-07-21 01:29:31,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:31,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829642550] [2020-07-21 01:29:31,805 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 01:29:31,925 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:29:31,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:31,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:29:31,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-07-21 01:29:32,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:29:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 216 proven. 102 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 01:29:32,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829642550] [2020-07-21 01:29:32,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:29:32,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:29:32,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447629466] [2020-07-21 01:29:32,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:29:32,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:32,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:29:32,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:29:32,200 INFO L87 Difference]: Start difference. First operand 1186 states and 1489 transitions. Second operand 7 states. [2020-07-21 01:29:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:29:33,948 INFO L93 Difference]: Finished difference Result 3097 states and 4047 transitions. [2020-07-21 01:29:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:29:33,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-07-21 01:29:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:29:33,959 INFO L225 Difference]: With dead ends: 3097 [2020-07-21 01:29:33,959 INFO L226 Difference]: Without dead ends: 2060 [2020-07-21 01:29:33,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 701 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:29:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2020-07-21 01:29:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 2054. [2020-07-21 01:29:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-07-21 01:29:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2563 transitions. [2020-07-21 01:29:34,016 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2563 transitions. Word has length 353 [2020-07-21 01:29:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:29:34,016 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2563 transitions. [2020-07-21 01:29:34,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:29:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2563 transitions. [2020-07-21 01:29:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-07-21 01:29:34,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:29:34,026 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:34,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:29:34,240 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:29:34,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:29:34,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1482445087, now seen corresponding path program 1 times [2020-07-21 01:29:34,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:29:34,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987667049] [2020-07-21 01:29:34,242 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 01:29:34,347 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:29:34,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:29:34,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 01:29:34,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:29:34,379 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:29:34,380 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:29:50,355 WARN L193 SmtUtils]: Spent 15.94 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 01:29:50,402 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:29:50,552 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-21 01:29:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 297 proven. 58 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-07-21 01:29:50,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:29:51,003 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:29:51,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:29:51,243 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:29:51,246 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:29:51,247 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:29:51,250 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:29:51,254 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:29:51,257 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:29:51,258 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:29:55,362 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-07-21 01:29:55,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987667049] [2020-07-21 01:29:55,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:29:55,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 01:29:55,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127754573] [2020-07-21 01:29:55,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:29:55,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:29:55,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:29:55,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:29:55,366 INFO L87 Difference]: Start difference. First operand 2054 states and 2563 transitions. Second operand 8 states. [2020-07-21 01:30:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:09,314 INFO L93 Difference]: Finished difference Result 4076 states and 5241 transitions. [2020-07-21 01:30:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 01:30:09,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 362 [2020-07-21 01:30:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:09,328 INFO L225 Difference]: With dead ends: 4076 [2020-07-21 01:30:09,328 INFO L226 Difference]: Without dead ends: 2266 [2020-07-21 01:30:09,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 629 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-07-21 01:30:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2020-07-21 01:30:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2227. [2020-07-21 01:30:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2227 states. [2020-07-21 01:30:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2750 transitions. [2020-07-21 01:30:09,392 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2750 transitions. Word has length 362 [2020-07-21 01:30:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:09,392 INFO L479 AbstractCegarLoop]: Abstraction has 2227 states and 2750 transitions. [2020-07-21 01:30:09,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:30:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2750 transitions. [2020-07-21 01:30:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-21 01:30:09,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:09,399 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:30:09,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:09,614 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash 147784809, now seen corresponding path program 1 times [2020-07-21 01:30:09,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:09,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365829916] [2020-07-21 01:30:09,616 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:09,775 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:30:09,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:09,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 01:30:09,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:09,822 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:30:09,822 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:30:09,823 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:30:09,825 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:30:09,826 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:30:09,826 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:30:09,828 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:30:09,829 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:30:28,126 WARN L193 SmtUtils]: Spent 18.24 s on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-07-21 01:30:30,204 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:30:30,300 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 01:30:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 316 proven. 20 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-07-21 01:30:30,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:30:30,769 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:30:30,935 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:30:30,937 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,938 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,938 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,939 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,940 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,941 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,942 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,943 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 01:30:30,944 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,944 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:30:30,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,949 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,949 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,950 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,951 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,952 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,952 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:30:30,954 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,954 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,955 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,956 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,957 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,958 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,959 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,959 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,960 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:30:30,961 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:30:30,962 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:30:30,965 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,966 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:30,966 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,967 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:30:30,969 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:30:30,971 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:30:30,977 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,980 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,981 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:30:30,982 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:30:30,987 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:30:30,990 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:30,991 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,991 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:30:30,993 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:30,993 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:30:30,994 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:30:30,995 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:30:30,997 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:30:48,856 WARN L193 SmtUtils]: Spent 17.70 s on a formula simplification. DAG size of input: 109 DAG size of output: 24 [2020-07-21 01:30:48,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365829916] [2020-07-21 01:30:48,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:30:48,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 01:30:48,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462339878] [2020-07-21 01:30:48,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:30:48,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:30:48,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-07-21 01:30:48,859 INFO L87 Difference]: Start difference. First operand 2227 states and 2750 transitions. Second operand 8 states. [2020-07-21 01:33:31,134 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2020-07-21 01:35:59,822 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-07-21 01:39:13,125 WARN L193 SmtUtils]: Spent 18.90 s on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:40:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:40:23,261 INFO L93 Difference]: Finished difference Result 5235 states and 6627 transitions. [2020-07-21 01:40:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 01:40:23,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2020-07-21 01:40:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:40:23,302 INFO L225 Difference]: With dead ends: 5235 [2020-07-21 01:40:23,302 INFO L226 Difference]: Without dead ends: 3157 [2020-07-21 01:40:23,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 66.5s TimeCoverageRelationStatistics Valid=204, Invalid=443, Unknown=3, NotChecked=0, Total=650 [2020-07-21 01:40:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2020-07-21 01:40:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2978. [2020-07-21 01:40:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-07-21 01:40:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3681 transitions. [2020-07-21 01:40:23,466 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3681 transitions. Word has length 398 [2020-07-21 01:40:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:40:23,467 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 3681 transitions. [2020-07-21 01:40:23,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:40:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3681 transitions. [2020-07-21 01:40:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-07-21 01:40:23,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:40:23,481 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:40:23,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:23,697 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:40:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:40:23,697 INFO L82 PathProgramCache]: Analyzing trace with hash 466916981, now seen corresponding path program 1 times [2020-07-21 01:40:23,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:40:23,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322907912] [2020-07-21 01:40:23,699 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:23,907 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:40:23,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:40:23,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:40:23,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:40:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-07-21 01:40:24,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:40:24,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322907912] [2020-07-21 01:40:24,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:40:24,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:40:24,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356773263] [2020-07-21 01:40:24,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:40:24,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:40:24,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:40:24,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:40:24,125 INFO L87 Difference]: Start difference. First operand 2978 states and 3681 transitions. Second operand 3 states. [2020-07-21 01:40:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:40:29,177 INFO L93 Difference]: Finished difference Result 5241 states and 6519 transitions. [2020-07-21 01:40:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:40:29,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 420 [2020-07-21 01:40:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:40:29,199 INFO L225 Difference]: With dead ends: 5241 [2020-07-21 01:40:29,199 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:40:29,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 418 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 01:40:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:40:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:40:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:40:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:40:29,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 420 [2020-07-21 01:40:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:40:29,215 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:40:29,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:40:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:40:29,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:40:29,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:29,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:40:30,584 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2020-07-21 01:40:31,073 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-07-21 01:40:36,031 WARN L193 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 164 DAG size of output: 56 [2020-07-21 01:40:36,269 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2020-07-21 01:40:37,699 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 117 DAG size of output: 32 [2020-07-21 01:40:38,995 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 117 DAG size of output: 32 [2020-07-21 01:40:39,003 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:40:39,003 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (<= 10 |old(~a19~0)|) (< ~a19~0 10)) (<= |old(~a10~0)| ~a10~0) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 01:40:39,004 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:40:39,004 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:40:39,004 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,004 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,004 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,004 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,004 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,005 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,005 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:40:39,005 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:40:39,005 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:40:39,005 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:40:39,005 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:40:39,005 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:40:39,006 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:40:39,006 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:40:39,006 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:40:39,006 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:40:39,006 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:40:39,006 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,007 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,007 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,007 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,007 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,007 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:40:39,007 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:40:39,008 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 151) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,009 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:40:39,010 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:40:39,011 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:40:39,012 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,013 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,014 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:40:39,014 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:40:39,014 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:40:39,014 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:40:39,014 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:40:39,014 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:40:39,014 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:40:39,015 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:40:39,015 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:40:39,015 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,015 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:40:39,016 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:40:39,017 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:40:39,018 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:40:39,018 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,018 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,018 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,018 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,018 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:40:39,018 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,019 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,019 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:40:39,019 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:40:39,019 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:40:39,019 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:40:39,019 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:40:39,020 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:40:39,020 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:40:39,020 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:40:39,020 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:40:39,020 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:40:39,020 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:40:39,020 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,021 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:40:39,022 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:40:39,022 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:40:39,022 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:40:39,022 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:40:39,022 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:40:39,022 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:40:39,022 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:40:39,023 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:40:39,023 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:40:39,023 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:40:39,023 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse9 (not (<= |old(~a19~0)| 6))) (.cse10 (<= ~a19~0 6)) (.cse4 (not (<= |old(~a10~0)| 0))) (.cse5 (not (<= 9 |old(~a19~0)|))) (.cse11 (not (< 38 |old(~a1~0)|))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse12 (= ~a19~0 |old(~a19~0)|)) (.cse0 (not (<= 1 |old(~a10~0)|))) (.cse6 (<= ~a10~0 |old(~a10~0)|)) (.cse7 (<= |old(~a10~0)| ~a10~0)) (.cse8 (= ~a1~0 |old(~a1~0)|)) (.cse1 (not (= 0 ~a12~0))) (.cse2 (not (= 14 ~a4~0)))) (and (or (<= ~a19~0 9) .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse1 .cse5 .cse2 (and (<= 9 ~a19~0) .cse6 .cse7 .cse8)) (or .cse9 .cse4 .cse1 .cse2 (and .cse6 .cse10 .cse7 .cse8)) (or .cse9 .cse10 .cse1 .cse2 (not (<= 2 |old(~a10~0)|))) (or .cse11 .cse0 .cse1 .cse2 .cse12) (or (and (or .cse4 .cse5 .cse3) (or .cse11 .cse3)) .cse1 .cse2 (and .cse6 .cse7 .cse12 .cse8)) (or .cse0 (and .cse6 .cse7 .cse8) .cse1 .cse2))) [2020-07-21 01:40:39,023 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:40:39,023 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:40:39,023 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:40:39,023 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:40:39,024 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,025 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:40:39,026 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:40:39,027 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 0 ~a12~0) (= 23 ~a1~0)) [2020-07-21 01:40:39,028 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:40:39,028 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (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)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 01:40:39,028 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:40:39,029 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (<= 9 ~a19~0) (<= ~a19~0 6) (< 38 ~a1~0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (= 0 ~a12~0)) (<= 1 ~a10~0) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9))) [2020-07-21 01:40:39,029 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:40:39,029 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:40:39,029 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (<= 9 ~a19~0) (<= ~a19~0 6) (< 38 ~a1~0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (= 0 ~a12~0)) (<= 1 ~a10~0) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9))) [2020-07-21 01:40:39,029 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:40:39,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:40:39 BoogieIcfgContainer [2020-07-21 01:40:39,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:40:39,057 INFO L168 Benchmark]: Toolchain (without parser) took 678606.03 ms. Allocated memory was 137.9 MB in the beginning and 472.4 MB in the end (delta: 334.5 MB). Free memory was 101.0 MB in the beginning and 133.0 MB in the end (delta: -32.0 MB). Peak memory consumption was 302.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:39,058 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:40:39,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.80 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:39,059 INFO L168 Benchmark]: Boogie Preprocessor took 104.53 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 164.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:39,060 INFO L168 Benchmark]: RCFGBuilder took 1309.34 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 164.9 MB in the beginning and 180.0 MB in the end (delta: -15.2 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:39,061 INFO L168 Benchmark]: TraceAbstraction took 676369.54 ms. Allocated memory was 234.9 MB in the beginning and 472.4 MB in the end (delta: 237.5 MB). Free memory was 180.0 MB in the beginning and 133.0 MB in the end (delta: 47.0 MB). Peak memory consumption was 284.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:39,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 816.80 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.53 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 164.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1309.34 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 164.9 MB in the beginning and 180.0 MB in the end (delta: -15.2 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 676369.54 ms. Allocated memory was 234.9 MB in the beginning and 472.4 MB in the end (delta: 237.5 MB). Free memory was 180.0 MB in the beginning and 133.0 MB in the end (delta: 47.0 MB). Peak memory consumption was 284.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 151]: 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: ((((((((9 <= a19 || a19 <= 6) || 38 < a1) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(9 <= \old(a19))) || !(0 == a12)) || 1 <= a10) || !(14 == a4)) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 666.6s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 600.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 908 SDtfs, 2503 SDslu, 330 SDs, 0 SdLazy, 7932 SolverSat, 1333 SolverUnsat, 249 SolverUnknown, 0 SolverNotchecked, 556.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3924 GetRequests, 3840 SyntacticMatches, 10 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 87.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2978occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 693 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 95 PreInvPairs, 143 NumberOfFragments, 338 HoareAnnotationTreeSize, 95 FomulaSimplifications, 2872 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4096 FormulaSimplificationTreeSizeReductionInter, 8.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 61.4s InterpolantComputationTime, 2505 NumberOfCodeBlocks, 1979 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 3333 ConstructedInterpolants, 12 QuantifiedInterpolants, 3988125 SizeOfPredicates, 26 NumberOfNonLiveVariables, 3486 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 2635/2921 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...