/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:29:29,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:29:29,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:29:29,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:29:29,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:29:29,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:29:29,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:29:29,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:29:29,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:29:29,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:29:29,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:29:29,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:29:29,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:29:29,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:29:29,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:29:29,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:29:29,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:29:29,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:29:29,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:29:29,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:29:29,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:29:29,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:29:29,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:29:29,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:29:29,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:29:29,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:29:29,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:29:29,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:29:29,168 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 11:29:29,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:29:29,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:29:29,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:29:29,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:29:29,188 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:29:29,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:29:29,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:29:29,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:29:29,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:29:29,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:29:29,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:29:29,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:29:29,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:29:29,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:29:29,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:29:29,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:29:29,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:29:29,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:29:29,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:29:29,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:29:29,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:29:29,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:29:29,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:29:29,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:29:29,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:29:29,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:29:29,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:29,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:29:29,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:29:29,194 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 -> NOT_INCREMENTALLY [2020-07-21 11:29:29,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:29:29,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:29:29,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:29:29,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:29:29,515 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:29:29,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-07-21 11:29:29,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb31da7c/7e31a884151742eba125d787a23e2b2b/FLAG3e2555add [2020-07-21 11:29:30,156 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:29:30,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-07-21 11:29:30,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb31da7c/7e31a884151742eba125d787a23e2b2b/FLAG3e2555add [2020-07-21 11:29:30,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb31da7c/7e31a884151742eba125d787a23e2b2b [2020-07-21 11:29:30,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:29:30,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:29:30,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:29:30,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:29:30,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:29:30,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:29:30" (1/1) ... [2020-07-21 11:29:30,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509c9cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:30, skipping insertion in model container [2020-07-21 11:29:30,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:29:30" (1/1) ... [2020-07-21 11:29:30,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:29:30,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:29:31,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:29:31,064 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:29:31,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:29:31,189 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:29:31,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31 WrapperNode [2020-07-21 11:29:31,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:29:31,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:29:31,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:29:31,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:29:31,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (1/1) ... [2020-07-21 11:29:31,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (1/1) ... [2020-07-21 11:29:31,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (1/1) ... [2020-07-21 11:29:31,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (1/1) ... [2020-07-21 11:29:31,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (1/1) ... [2020-07-21 11:29:31,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (1/1) ... [2020-07-21 11:29:31,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (1/1) ... [2020-07-21 11:29:31,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:29:31,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:29:31,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:29:31,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:29:31,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (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 11:29:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:29:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:29:31,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 11:29:31,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:29:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 11:29:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:29:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:29:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 11:29:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:29:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:29:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:29:32,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:29:32,845 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:29:32,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:29:32 BoogieIcfgContainer [2020-07-21 11:29:32,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:29:32,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:29:32,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:29:32,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:29:32,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:29:30" (1/3) ... [2020-07-21 11:29:32,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8538631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:29:32, skipping insertion in model container [2020-07-21 11:29:32,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:29:31" (2/3) ... [2020-07-21 11:29:32,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8538631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:29:32, skipping insertion in model container [2020-07-21 11:29:32,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:29:32" (3/3) ... [2020-07-21 11:29:32,860 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-07-21 11:29:32,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:29:32,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:29:32,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:29:32,922 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:29:32,922 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:29:32,922 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:29:32,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:29:32,923 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:29:32,923 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:29:32,923 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:29:32,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:29:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 11:29:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 11:29:32,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:32,957 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] [2020-07-21 11:29:32,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:32,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1025349313, now seen corresponding path program 1 times [2020-07-21 11:29:32,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:32,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936293138] [2020-07-21 11:29:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 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 11:29:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:33,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:29:33,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:33,143 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 11:29:33,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:33,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936293138] [2020-07-21 11:29:33,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:33,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:29:33,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792296368] [2020-07-21 11:29:33,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:29:33,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:33,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:29:33,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:29:33,169 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 11:29:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:34,395 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 11:29:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:29:34,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-21 11:29:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:34,414 INFO L225 Difference]: With dead ends: 586 [2020-07-21 11:29:34,414 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 11:29:34,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 11:29:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 11:29:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 11:29:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 11:29:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 11:29:34,497 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 36 [2020-07-21 11:29:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:34,498 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 11:29:34,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:29:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 11:29:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-21 11:29:34,504 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:34,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:34,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:34,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:34,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1168948250, now seen corresponding path program 1 times [2020-07-21 11:29:34,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:34,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769724578] [2020-07-21 11:29:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 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 11:29:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:34,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:29:34,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:34,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:34,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769724578] [2020-07-21 11:29:34,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:34,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:29:34,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262107960] [2020-07-21 11:29:34,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:29:34,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:34,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:29:34,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:29:34,879 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 11:29:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:35,935 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 11:29:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:29:35,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-07-21 11:29:35,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:35,954 INFO L225 Difference]: With dead ends: 890 [2020-07-21 11:29:35,954 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 11:29:35,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 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 11:29:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 11:29:36,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 11:29:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 11:29:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-21 11:29:36,045 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 110 [2020-07-21 11:29:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:36,047 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-21 11:29:36,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:29:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-21 11:29:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-21 11:29:36,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:36,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:36,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:36,271 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:36,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1710537437, now seen corresponding path program 1 times [2020-07-21 11:29:36,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:36,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093221505] [2020-07-21 11:29:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 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 11:29:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:36,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:36,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:36,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:36,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093221505] [2020-07-21 11:29:36,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:36,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:29:36,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001672739] [2020-07-21 11:29:36,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:29:36,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:29:36,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:29:36,383 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-21 11:29:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:37,097 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-21 11:29:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:29:37,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-07-21 11:29:37,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:37,105 INFO L225 Difference]: With dead ends: 1462 [2020-07-21 11:29:37,105 INFO L226 Difference]: Without dead ends: 878 [2020-07-21 11:29:37,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 11:29:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-21 11:29:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-21 11:29:37,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-21 11:29:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-21 11:29:37,141 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 115 [2020-07-21 11:29:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:37,142 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-21 11:29:37,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:29:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-21 11:29:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-21 11:29:37,145 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:37,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:37,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:37,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:37,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1140420541, now seen corresponding path program 1 times [2020-07-21 11:29:37,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:37,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332976119] [2020-07-21 11:29:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 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 11:29:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:37,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:29:37,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:37,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:37,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332976119] [2020-07-21 11:29:37,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:37,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:29:37,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414559636] [2020-07-21 11:29:37,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:29:37,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:37,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:29:37,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:29:37,545 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-21 11:29:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:38,521 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-21 11:29:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:29:38,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-07-21 11:29:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:38,536 INFO L225 Difference]: With dead ends: 2370 [2020-07-21 11:29:38,536 INFO L226 Difference]: Without dead ends: 1498 [2020-07-21 11:29:38,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:29:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-21 11:29:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-21 11:29:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-21 11:29:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-21 11:29:38,602 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 131 [2020-07-21 11:29:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:38,603 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-21 11:29:38,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:29:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-21 11:29:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-21 11:29:38,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:38,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:38,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:38,820 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:38,821 INFO L82 PathProgramCache]: Analyzing trace with hash 686602382, now seen corresponding path program 1 times [2020-07-21 11:29:38,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:38,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037881138] [2020-07-21 11:29:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:29:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:38,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:38,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:38,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:38,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037881138] [2020-07-21 11:29:38,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:38,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:29:38,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582775694] [2020-07-21 11:29:38,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:29:38,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:38,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:29:38,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:29:38,958 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-21 11:29:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:39,652 INFO L93 Difference]: Finished difference Result 2197 states and 2747 transitions. [2020-07-21 11:29:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:29:39,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-07-21 11:29:39,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:39,667 INFO L225 Difference]: With dead ends: 2197 [2020-07-21 11:29:39,667 INFO L226 Difference]: Without dead ends: 2195 [2020-07-21 11:29:39,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 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 11:29:39,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2020-07-21 11:29:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1909. [2020-07-21 11:29:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-07-21 11:29:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2415 transitions. [2020-07-21 11:29:39,734 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2415 transitions. Word has length 132 [2020-07-21 11:29:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:39,734 INFO L479 AbstractCegarLoop]: Abstraction has 1909 states and 2415 transitions. [2020-07-21 11:29:39,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:29:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2415 transitions. [2020-07-21 11:29:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-21 11:29:39,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:39,739 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:29:39,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:39,954 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:39,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:39,954 INFO L82 PathProgramCache]: Analyzing trace with hash 765262029, now seen corresponding path program 1 times [2020-07-21 11:29:39,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:39,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909312963] [2020-07-21 11:29:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:29:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:40,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:40,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:40,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:29:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:40,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909312963] [2020-07-21 11:29:40,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:29:40,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 11:29:40,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088117627] [2020-07-21 11:29:40,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:29:40,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:29:40,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:29:40,324 INFO L87 Difference]: Start difference. First operand 1909 states and 2415 transitions. Second operand 6 states. [2020-07-21 11:29:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:41,441 INFO L93 Difference]: Finished difference Result 4414 states and 5721 transitions. [2020-07-21 11:29:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:29:41,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-07-21 11:29:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:41,462 INFO L225 Difference]: With dead ends: 4414 [2020-07-21 11:29:41,462 INFO L226 Difference]: Without dead ends: 2511 [2020-07-21 11:29:41,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:29:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-07-21 11:29:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2358. [2020-07-21 11:29:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-07-21 11:29:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2988 transitions. [2020-07-21 11:29:41,565 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2988 transitions. Word has length 204 [2020-07-21 11:29:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:41,566 INFO L479 AbstractCegarLoop]: Abstraction has 2358 states and 2988 transitions. [2020-07-21 11:29:41,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:29:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2988 transitions. [2020-07-21 11:29:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-07-21 11:29:41,573 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:41,574 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:29:41,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:41,789 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1567937143, now seen corresponding path program 1 times [2020-07-21 11:29:41,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:41,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824298038] [2020-07-21 11:29:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:29:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:41,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:41,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-07-21 11:29:41,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:41,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824298038] [2020-07-21 11:29:41,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:41,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:29:41,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866418787] [2020-07-21 11:29:41,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:29:41,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:29:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:29:41,977 INFO L87 Difference]: Start difference. First operand 2358 states and 2988 transitions. Second operand 3 states. [2020-07-21 11:29:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:42,662 INFO L93 Difference]: Finished difference Result 5723 states and 7412 transitions. [2020-07-21 11:29:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:29:42,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-07-21 11:29:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:42,681 INFO L225 Difference]: With dead ends: 5723 [2020-07-21 11:29:42,682 INFO L226 Difference]: Without dead ends: 3371 [2020-07-21 11:29:42,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 219 SyntacticMatches, 1 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 11:29:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2020-07-21 11:29:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3085. [2020-07-21 11:29:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3085 states. [2020-07-21 11:29:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 3850 transitions. [2020-07-21 11:29:42,780 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 3850 transitions. Word has length 222 [2020-07-21 11:29:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:42,781 INFO L479 AbstractCegarLoop]: Abstraction has 3085 states and 3850 transitions. [2020-07-21 11:29:42,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:29:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 3850 transitions. [2020-07-21 11:29:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-07-21 11:29:42,787 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:42,788 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:29:43,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:43,002 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1850787275, now seen corresponding path program 1 times [2020-07-21 11:29:43,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:43,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928134252] [2020-07-21 11:29:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:29:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:43,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:43,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 11:29:43,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:43,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928134252] [2020-07-21 11:29:43,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:43,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:29:43,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827037843] [2020-07-21 11:29:43,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:29:43,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:43,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:29:43,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:29:43,200 INFO L87 Difference]: Start difference. First operand 3085 states and 3850 transitions. Second operand 3 states. [2020-07-21 11:29:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:43,961 INFO L93 Difference]: Finished difference Result 6742 states and 8572 transitions. [2020-07-21 11:29:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:29:43,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-07-21 11:29:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:43,981 INFO L225 Difference]: With dead ends: 6742 [2020-07-21 11:29:43,981 INFO L226 Difference]: Without dead ends: 3663 [2020-07-21 11:29:43,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 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 11:29:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2020-07-21 11:29:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3516. [2020-07-21 11:29:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3516 states. [2020-07-21 11:29:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4456 transitions. [2020-07-21 11:29:44,077 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4456 transitions. Word has length 232 [2020-07-21 11:29:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:44,077 INFO L479 AbstractCegarLoop]: Abstraction has 3516 states and 4456 transitions. [2020-07-21 11:29:44,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:29:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4456 transitions. [2020-07-21 11:29:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-07-21 11:29:44,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:44,087 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:29:44,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:44,290 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:44,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:44,290 INFO L82 PathProgramCache]: Analyzing trace with hash 633023203, now seen corresponding path program 1 times [2020-07-21 11:29:44,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:44,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136611240] [2020-07-21 11:29:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:29:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:44,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:44,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:44,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:29:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:44,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136611240] [2020-07-21 11:29:44,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:29:44,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 11:29:44,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987895445] [2020-07-21 11:29:44,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:29:44,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:44,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:29:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:29:44,677 INFO L87 Difference]: Start difference. First operand 3516 states and 4456 transitions. Second operand 6 states. [2020-07-21 11:29:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:45,879 INFO L93 Difference]: Finished difference Result 8103 states and 10496 transitions. [2020-07-21 11:29:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:29:45,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2020-07-21 11:29:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:45,902 INFO L225 Difference]: With dead ends: 8103 [2020-07-21 11:29:45,903 INFO L226 Difference]: Without dead ends: 2992 [2020-07-21 11:29:45,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 508 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:29:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-07-21 11:29:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2652. [2020-07-21 11:29:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2020-07-21 11:29:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3213 transitions. [2020-07-21 11:29:46,050 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3213 transitions. Word has length 256 [2020-07-21 11:29:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:46,050 INFO L479 AbstractCegarLoop]: Abstraction has 2652 states and 3213 transitions. [2020-07-21 11:29:46,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:29:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3213 transitions. [2020-07-21 11:29:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-07-21 11:29:46,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:46,067 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:29:46,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:46,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash 611370194, now seen corresponding path program 1 times [2020-07-21 11:29:46,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:46,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976414765] [2020-07-21 11:29:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:29:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:46,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:46,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:46,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:29:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:29:46,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976414765] [2020-07-21 11:29:46,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:29:46,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 11:29:46,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002678021] [2020-07-21 11:29:46,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:29:46,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:29:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:29:46,885 INFO L87 Difference]: Start difference. First operand 2652 states and 3213 transitions. Second operand 7 states. [2020-07-21 11:29:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:48,662 INFO L93 Difference]: Finished difference Result 5336 states and 6562 transitions. [2020-07-21 11:29:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:29:48,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-07-21 11:29:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:48,675 INFO L225 Difference]: With dead ends: 5336 [2020-07-21 11:29:48,676 INFO L226 Difference]: Without dead ends: 2690 [2020-07-21 11:29:48,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:29:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2020-07-21 11:29:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2654. [2020-07-21 11:29:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2654 states. [2020-07-21 11:29:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 2996 transitions. [2020-07-21 11:29:48,747 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 2996 transitions. Word has length 273 [2020-07-21 11:29:48,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:48,748 INFO L479 AbstractCegarLoop]: Abstraction has 2654 states and 2996 transitions. [2020-07-21 11:29:48,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:29:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 2996 transitions. [2020-07-21 11:29:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-07-21 11:29:48,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:29:48,756 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:29:48,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:48,971 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:29:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:29:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1980077803, now seen corresponding path program 1 times [2020-07-21 11:29:48,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:29:48,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206414666] [2020-07-21 11:29:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:29:49,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:29:49,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:29:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-07-21 11:29:49,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:29:49,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206414666] [2020-07-21 11:29:49,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:29:49,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:29:49,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704460666] [2020-07-21 11:29:49,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:29:49,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:29:49,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:29:49,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:29:49,188 INFO L87 Difference]: Start difference. First operand 2654 states and 2996 transitions. Second operand 3 states. [2020-07-21 11:29:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:29:49,544 INFO L93 Difference]: Finished difference Result 2654 states and 2996 transitions. [2020-07-21 11:29:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:29:49,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 292 [2020-07-21 11:29:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:29:49,546 INFO L225 Difference]: With dead ends: 2654 [2020-07-21 11:29:49,546 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:29:49,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 290 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 11:29:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:29:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:29:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:29:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:29:49,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 292 [2020-07-21 11:29:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:29:49,552 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:29:49,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:29:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:29:49,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:29:49,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:29:49,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:29:50,182 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 91 [2020-07-21 11:29:51,080 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 59 [2020-07-21 11:29:51,346 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 33 [2020-07-21 11:29:51,601 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 33 [2020-07-21 11:29:51,605 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:29:51,606 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|)) [2020-07-21 11:29:51,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:29:51,606 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 11:29:51,606 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,606 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,606 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 11:29:51,607 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 11:29:51,608 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 11:29:51,608 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 11:29:51,608 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 11:29:51,608 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 11:29:51,608 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 11:29:51,608 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 11:29:51,608 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 11:29:51,609 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 94) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,610 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 11:29:51,611 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 11:29:51,612 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 11:29:51,613 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,614 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 11:29:51,615 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 11:29:51,616 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 11:29:51,617 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 11:29:51,618 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 11:29:51,619 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,620 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 11:29:51,621 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 11:29:51,622 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 11:29:51,622 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 11:29:51,622 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse7 (<= ~a10~0 |old(~a10~0)|)) (.cse9 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse4 (and .cse7 .cse9)) (.cse1 (<= ~a1~0 23)) (.cse8 (<= |old(~a10~0)| ~a10~0)) (.cse2 (not (<= |old(~a10~0)| 1))) (.cse10 (<= 9 ~a19~0)) (.cse0 (not (<= |old(~a1~0)| 23))) (.cse11 (not (<= 9 |old(~a19~0)|))) (.cse12 (not (<= |old(~a10~0)| 2))) (.cse3 (not (< 218 |old(~a1~0)|))) (.cse5 (not (<= |old(~a19~0)| 9))) (.cse6 (< 218 ~a1~0))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5) (or .cse3 .cse6 .cse2) (or (not (<= |old(~a10~0)| 3)) (not (<= |old(~a19~0)| 8)) .cse4) (or .cse0 .cse4 .cse5) (or .cse0 .cse1 .cse5) (or (not (<= 8 |old(~a19~0)|)) .cse5 (and .cse7 (<= 8 ~a19~0) .cse8 .cse9)) (or .cse10 .cse3 .cse11 .cse5 .cse12) (or (not (<= 4 |old(~a10~0)|)) .cse10 .cse11 .cse5) (or (and .cse10 .cse7 .cse8 .cse9) .cse11 .cse2) (or .cse10 .cse0 .cse11 .cse5 .cse12) (or .cse3 .cse5 .cse6)))) [2020-07-21 11:29:51,622 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 11:29:51,622 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 11:29:51,623 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 11:29:51,624 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,625 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 11:29:51,626 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,627 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:29:51,628 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 11:29:51,628 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 11:29:51,628 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 11:29:51,628 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 11:29:51,657 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 11:29:51,657 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 11:29:51,657 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 11:29:51,657 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 11:29:51,657 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 11:29:51,657 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 11:29:51,658 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 11:29:51,658 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 11:29:51,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:29:51,658 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (<= ~a1~0 23)) [2020-07-21 11:29:51,658 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:29:51,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:29:51,658 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 23) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-21 11:29:51,658 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 11:29:51,659 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= ~a1~0 23)) (<= ~a10~0 1) (and .cse0 (<= ~a10~0 3)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (and (<= ~a19~0 8) (< 218 ~a1~0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= 8 ~a19~0)))) [2020-07-21 11:29:51,659 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 11:29:51,659 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 11:29:51,659 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= ~a1~0 23)) (<= ~a10~0 1) (and .cse0 (<= ~a10~0 3)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (and (<= ~a19~0 8) (< 218 ~a1~0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= 8 ~a19~0)))) [2020-07-21 11:29:51,659 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 11:29:51,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:29:51 BoogieIcfgContainer [2020-07-21 11:29:51,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:29:51,679 INFO L168 Benchmark]: Toolchain (without parser) took 21242.00 ms. Allocated memory was 144.7 MB in the beginning and 550.0 MB in the end (delta: 405.3 MB). Free memory was 99.5 MB in the beginning and 505.1 MB in the end (delta: -405.6 MB). Peak memory consumption was 371.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:29:51,679 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 11:29:51,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.30 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 99.1 MB in the beginning and 170.6 MB in the end (delta: -71.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:29:51,681 INFO L168 Benchmark]: Boogie Preprocessor took 122.42 ms. Allocated memory is still 204.5 MB. Free memory was 170.6 MB in the beginning and 165.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:29:51,682 INFO L168 Benchmark]: RCFGBuilder took 1537.63 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 180.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:29:51,683 INFO L168 Benchmark]: TraceAbstraction took 18824.46 ms. Allocated memory was 236.5 MB in the beginning and 550.0 MB in the end (delta: 313.5 MB). Free memory was 180.7 MB in the beginning and 505.1 MB in the end (delta: -324.4 MB). Peak memory consumption was 360.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:29:51,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 751.30 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 99.1 MB in the beginning and 170.6 MB in the end (delta: -71.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.42 ms. Allocated memory is still 204.5 MB. Free memory was 170.6 MB in the beginning and 165.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1537.63 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 180.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18824.46 ms. Allocated memory was 236.5 MB in the beginning and 550.0 MB in the end (delta: 313.5 MB). Free memory was 180.7 MB in the beginning and 505.1 MB in the end (delta: -324.4 MB). Peak memory consumption was 360.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: 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: ((((((((a19 <= 9 && a1 <= 23) || a10 <= 1) || (a19 <= 9 && a10 <= 3)) || !(\old(a1) <= 23)) || !(\old(a10) <= 0)) || (a19 <= 8 && 218 < a1)) || !(9 <= \old(a19))) || !(\old(a19) <= 9)) || (a19 <= 9 && 8 <= a19) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 2401 SDslu, 237 SDs, 0 SdLazy, 6191 SolverSat, 1163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2751 GetRequests, 2703 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3516occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 1288 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 140 PreInvPairs, 198 NumberOfFragments, 350 HoareAnnotationTreeSize, 140 FomulaSimplifications, 7830 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3033 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 2003 NumberOfCodeBlocks, 2003 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2722 ConstructedInterpolants, 0 QuantifiedInterpolants, 1457218 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3699 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 1398/1410 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...