java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:02:26,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:02:26,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:02:26,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-14 22:02:26,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:02:26,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:02:26,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:02:26,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:02:26,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:02:26,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:02:26,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:02:26,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:02:26,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:02:26,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:02:26,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:02:26,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:02:26,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:02:26,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:02:26,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:02:26,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:02:26,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:02:26,299 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:02:26,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:02:26,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:02:26,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:02:26,301 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:02:26,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:02:26,302 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:02:26,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:02:26,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:02:26,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:02:26,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:02:26,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:02:26,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:02:26,303 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:02:26,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:02:26,303 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:02:26,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:02:26,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:02:26,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:02:26,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:02:26,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:02:26,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:02:26,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:02:26,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:02:26,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:02:26,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:02:26,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:02:26,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:02:26,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:02:26,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:02:26,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:02:26,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:02:26,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:02:26,633 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:02:26,634 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2019-10-14 22:02:26,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19916edbf/aa3da896fbc04fc9abe88be14c5e566d/FLAG0bca15c28 [2019-10-14 22:02:27,329 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:02:27,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2019-10-14 22:02:27,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19916edbf/aa3da896fbc04fc9abe88be14c5e566d/FLAG0bca15c28 [2019-10-14 22:02:27,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19916edbf/aa3da896fbc04fc9abe88be14c5e566d [2019-10-14 22:02:27,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:02:27,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:02:27,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:02:27,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:02:27,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:02:27,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:27" (1/1) ... [2019-10-14 22:02:27,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0e25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:27, skipping insertion in model container [2019-10-14 22:02:27,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:27" (1/1) ... [2019-10-14 22:02:27,567 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:02:27,616 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:02:28,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:02:28,185 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:02:28,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:02:28,393 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:02:28,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28 WrapperNode [2019-10-14 22:02:28,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:02:28,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:02:28,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:02:28,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:02:28,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... [2019-10-14 22:02:28,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... [2019-10-14 22:02:28,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... [2019-10-14 22:02:28,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... [2019-10-14 22:02:28,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... [2019-10-14 22:02:28,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... [2019-10-14 22:02:28,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... [2019-10-14 22:02:28,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:02:28,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:02:28,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:02:28,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:02:28,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:02:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:02:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:02:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:02:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:02:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:02:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:02:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:02:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:02:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:02:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:02:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:02:30,201 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:02:30,202 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:02:30,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:02:30 BoogieIcfgContainer [2019-10-14 22:02:30,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:02:30,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:02:30,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:02:30,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:02:30,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:02:27" (1/3) ... [2019-10-14 22:02:30,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359948fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:02:30, skipping insertion in model container [2019-10-14 22:02:30,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:28" (2/3) ... [2019-10-14 22:02:30,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359948fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:02:30, skipping insertion in model container [2019-10-14 22:02:30,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:02:30" (3/3) ... [2019-10-14 22:02:30,212 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label50.c [2019-10-14 22:02:30,222 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:02:30,231 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:02:30,243 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:02:30,278 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:02:30,278 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:02:30,278 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:02:30,279 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:02:30,279 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:02:30,279 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:02:30,279 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:02:30,279 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:02:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-14 22:02:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 22:02:30,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:30,326 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:30,328 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:30,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1557712066, now seen corresponding path program 1 times [2019-10-14 22:02:30,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:30,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983056605] [2019-10-14 22:02:30,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:30,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:30,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:30,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983056605] [2019-10-14 22:02:30,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:02:30,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:02:30,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754579245] [2019-10-14 22:02:30,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:02:30,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:30,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:02:30,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:02:30,744 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2019-10-14 22:02:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:33,347 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2019-10-14 22:02:33,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:02:33,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-14 22:02:33,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:33,384 INFO L225 Difference]: With dead ends: 886 [2019-10-14 22:02:33,385 INFO L226 Difference]: Without dead ends: 564 [2019-10-14 22:02:33,398 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-14 22:02:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2019-10-14 22:02:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-14 22:02:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2019-10-14 22:02:33,514 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 43 [2019-10-14 22:02:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:33,515 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2019-10-14 22:02:33,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:02:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2019-10-14 22:02:33,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-14 22:02:33,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:33,523 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:33,524 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:33,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1883069890, now seen corresponding path program 1 times [2019-10-14 22:02:33,524 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:33,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073316101] [2019-10-14 22:02:33,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:33,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:33,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:33,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073316101] [2019-10-14 22:02:33,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:02:33,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:02:33,879 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387079033] [2019-10-14 22:02:33,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:02:33,882 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:02:33,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:02:33,883 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand 9 states. [2019-10-14 22:02:35,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:35,923 INFO L93 Difference]: Finished difference Result 1320 states and 2174 transitions. [2019-10-14 22:02:35,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:02:35,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2019-10-14 22:02:35,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:35,930 INFO L225 Difference]: With dead ends: 1320 [2019-10-14 22:02:35,930 INFO L226 Difference]: Without dead ends: 768 [2019-10-14 22:02:35,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:02:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-14 22:02:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 566. [2019-10-14 22:02:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-10-14 22:02:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 819 transitions. [2019-10-14 22:02:35,968 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 819 transitions. Word has length 129 [2019-10-14 22:02:35,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:35,969 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 819 transitions. [2019-10-14 22:02:35,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:02:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 819 transitions. [2019-10-14 22:02:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-14 22:02:35,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:35,975 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:35,976 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1079220531, now seen corresponding path program 1 times [2019-10-14 22:02:35,976 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:35,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119665676] [2019-10-14 22:02:35,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:35,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:35,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:36,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119665676] [2019-10-14 22:02:36,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101779122] [2019-10-14 22:02:36,234 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:36,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:02:36,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:02:36,401 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:36,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:02:36,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179823490] [2019-10-14 22:02:36,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:02:36,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:02:36,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:36,404 INFO L87 Difference]: Start difference. First operand 566 states and 819 transitions. Second operand 3 states. [2019-10-14 22:02:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:37,215 INFO L93 Difference]: Finished difference Result 1680 states and 2467 transitions. [2019-10-14 22:02:37,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:02:37,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-10-14 22:02:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:37,222 INFO L225 Difference]: With dead ends: 1680 [2019-10-14 22:02:37,223 INFO L226 Difference]: Without dead ends: 1120 [2019-10-14 22:02:37,224 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2019-10-14 22:02:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 934. [2019-10-14 22:02:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2019-10-14 22:02:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1279 transitions. [2019-10-14 22:02:37,258 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1279 transitions. Word has length 138 [2019-10-14 22:02:37,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:37,259 INFO L462 AbstractCegarLoop]: Abstraction has 934 states and 1279 transitions. [2019-10-14 22:02:37,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:02:37,259 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1279 transitions. [2019-10-14 22:02:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-14 22:02:37,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:37,268 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:02:37,471 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:37,472 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:37,472 INFO L82 PathProgramCache]: Analyzing trace with hash 209442382, now seen corresponding path program 1 times [2019-10-14 22:02:37,472 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:37,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4062390] [2019-10-14 22:02:37,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:37,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:37,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-14 22:02:37,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4062390] [2019-10-14 22:02:37,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296806614] [2019-10-14 22:02:37,803 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:37,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:02:37,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-14 22:02:38,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:38,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:02:38,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664409756] [2019-10-14 22:02:38,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:02:38,009 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:38,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:02:38,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:38,010 INFO L87 Difference]: Start difference. First operand 934 states and 1279 transitions. Second operand 3 states. [2019-10-14 22:02:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:38,878 INFO L93 Difference]: Finished difference Result 2414 states and 3392 transitions. [2019-10-14 22:02:38,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:02:38,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2019-10-14 22:02:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:38,887 INFO L225 Difference]: With dead ends: 2414 [2019-10-14 22:02:38,887 INFO L226 Difference]: Without dead ends: 1486 [2019-10-14 22:02:38,890 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2019-10-14 22:02:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1304. [2019-10-14 22:02:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2019-10-14 22:02:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1748 transitions. [2019-10-14 22:02:38,936 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1748 transitions. Word has length 241 [2019-10-14 22:02:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:38,937 INFO L462 AbstractCegarLoop]: Abstraction has 1304 states and 1748 transitions. [2019-10-14 22:02:38,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:02:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1748 transitions. [2019-10-14 22:02:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-10-14 22:02:38,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:38,944 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:39,148 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:39,149 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:39,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:39,149 INFO L82 PathProgramCache]: Analyzing trace with hash 157930481, now seen corresponding path program 1 times [2019-10-14 22:02:39,149 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:39,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389475781] [2019-10-14 22:02:39,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:39,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:39,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-14 22:02:39,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389475781] [2019-10-14 22:02:39,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165429772] [2019-10-14 22:02:39,444 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:39,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:02:39,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-14 22:02:39,620 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:39,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:02:39,621 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308018122] [2019-10-14 22:02:39,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:02:39,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:39,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:02:39,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:39,622 INFO L87 Difference]: Start difference. First operand 1304 states and 1748 transitions. Second operand 3 states. [2019-10-14 22:02:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:40,434 INFO L93 Difference]: Finished difference Result 3156 states and 4345 transitions. [2019-10-14 22:02:40,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:02:40,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2019-10-14 22:02:40,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:40,449 INFO L225 Difference]: With dead ends: 3156 [2019-10-14 22:02:40,449 INFO L226 Difference]: Without dead ends: 1858 [2019-10-14 22:02:40,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:02:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2019-10-14 22:02:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1674. [2019-10-14 22:02:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2019-10-14 22:02:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2323 transitions. [2019-10-14 22:02:40,555 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2323 transitions. Word has length 260 [2019-10-14 22:02:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:40,555 INFO L462 AbstractCegarLoop]: Abstraction has 1674 states and 2323 transitions. [2019-10-14 22:02:40,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:02:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2323 transitions. [2019-10-14 22:02:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-10-14 22:02:40,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:40,562 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:40,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:40,767 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:40,768 INFO L82 PathProgramCache]: Analyzing trace with hash 762391661, now seen corresponding path program 1 times [2019-10-14 22:02:40,768 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:40,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440581390] [2019-10-14 22:02:40,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:40,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:40,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 143 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:02:41,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440581390] [2019-10-14 22:02:41,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339554871] [2019-10-14 22:02:41,737 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:41,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 22:02:41,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:41,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:02:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-14 22:02:42,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:42,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2019-10-14 22:02:42,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774137036] [2019-10-14 22:02:42,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:02:42,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:42,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:02:42,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:02:42,015 INFO L87 Difference]: Start difference. First operand 1674 states and 2323 transitions. Second operand 5 states. [2019-10-14 22:02:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:43,391 INFO L93 Difference]: Finished difference Result 3926 states and 5450 transitions. [2019-10-14 22:02:43,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:02:43,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2019-10-14 22:02:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:43,404 INFO L225 Difference]: With dead ends: 3926 [2019-10-14 22:02:43,405 INFO L226 Difference]: Without dead ends: 2258 [2019-10-14 22:02:43,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2019-10-14 22:02:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2019-10-14 22:02:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2066. [2019-10-14 22:02:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2066 states. [2019-10-14 22:02:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2766 transitions. [2019-10-14 22:02:43,468 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2766 transitions. Word has length 274 [2019-10-14 22:02:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:43,469 INFO L462 AbstractCegarLoop]: Abstraction has 2066 states and 2766 transitions. [2019-10-14 22:02:43,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:02:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2766 transitions. [2019-10-14 22:02:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2019-10-14 22:02:43,477 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:43,477 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:43,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:43,682 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1515376597, now seen corresponding path program 1 times [2019-10-14 22:02:43,683 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:43,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497233469] [2019-10-14 22:02:43,684 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:43,684 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:43,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 118 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 22:02:45,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497233469] [2019-10-14 22:02:45,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337260772] [2019-10-14 22:02:45,239 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:45,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-14 22:02:45,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:45,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-14 22:02:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 298 proven. 53 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-14 22:02:45,632 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:02:45,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16 [2019-10-14 22:02:45,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965845616] [2019-10-14 22:02:45,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 22:02:45,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:45,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 22:02:45,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:02:45,634 INFO L87 Difference]: Start difference. First operand 2066 states and 2766 transitions. Second operand 16 states. [2019-10-14 22:02:51,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:51,477 INFO L93 Difference]: Finished difference Result 4262 states and 5767 transitions. [2019-10-14 22:02:51,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 22:02:51,477 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 358 [2019-10-14 22:02:51,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:51,488 INFO L225 Difference]: With dead ends: 4262 [2019-10-14 22:02:51,488 INFO L226 Difference]: Without dead ends: 2339 [2019-10-14 22:02:51,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2019-10-14 22:02:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2019-10-14 22:02:51,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2262. [2019-10-14 22:02:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-14 22:02:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2757 transitions. [2019-10-14 22:02:51,561 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2757 transitions. Word has length 358 [2019-10-14 22:02:51,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:51,562 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 2757 transitions. [2019-10-14 22:02:51,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-14 22:02:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2757 transitions. [2019-10-14 22:02:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-10-14 22:02:51,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:51,572 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:51,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:51,780 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:51,780 INFO L82 PathProgramCache]: Analyzing trace with hash -784745466, now seen corresponding path program 1 times [2019-10-14 22:02:51,780 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:51,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265705311] [2019-10-14 22:02:51,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:51,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:51,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 289 proven. 41 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-10-14 22:02:53,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265705311] [2019-10-14 22:02:53,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686068562] [2019-10-14 22:02:53,061 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:53,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 22:02:53,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:53,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 22:02:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-10-14 22:02:53,347 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:02:53,347 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2019-10-14 22:02:53,347 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381502050] [2019-10-14 22:02:53,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:02:53,348 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:53,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:02:53,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:02:53,349 INFO L87 Difference]: Start difference. First operand 2262 states and 2757 transitions. Second operand 5 states. [2019-10-14 22:02:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:54,715 INFO L93 Difference]: Finished difference Result 4354 states and 5361 transitions. [2019-10-14 22:02:54,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:02:54,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 383 [2019-10-14 22:02:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:54,725 INFO L225 Difference]: With dead ends: 4354 [2019-10-14 22:02:54,726 INFO L226 Difference]: Without dead ends: 2282 [2019-10-14 22:02:54,732 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2019-10-14 22:02:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2019-10-14 22:02:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2278. [2019-10-14 22:02:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2019-10-14 22:02:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 2708 transitions. [2019-10-14 22:02:54,784 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 2708 transitions. Word has length 383 [2019-10-14 22:02:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:54,784 INFO L462 AbstractCegarLoop]: Abstraction has 2278 states and 2708 transitions. [2019-10-14 22:02:54,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:02:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 2708 transitions. [2019-10-14 22:02:54,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2019-10-14 22:02:54,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:54,792 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:54,998 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:54,999 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:54,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:54,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1555619278, now seen corresponding path program 1 times [2019-10-14 22:02:55,000 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:55,000 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000638359] [2019-10-14 22:02:55,000 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:55,000 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:55,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 370 proven. 111 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2019-10-14 22:02:55,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000638359] [2019-10-14 22:02:55,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782163797] [2019-10-14 22:02:55,979 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:56,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 22:02:56,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:02:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 658 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-10-14 22:02:56,414 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:02:56,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 9 [2019-10-14 22:02:56,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204464547] [2019-10-14 22:02:56,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:02:56,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:02:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:02:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:02:56,417 INFO L87 Difference]: Start difference. First operand 2278 states and 2708 transitions. Second operand 9 states. [2019-10-14 22:02:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:02:58,667 INFO L93 Difference]: Finished difference Result 4564 states and 5442 transitions. [2019-10-14 22:02:58,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 22:02:58,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 493 [2019-10-14 22:02:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:02:58,680 INFO L225 Difference]: With dead ends: 4564 [2019-10-14 22:02:58,681 INFO L226 Difference]: Without dead ends: 2476 [2019-10-14 22:02:58,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:02:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2019-10-14 22:02:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2284. [2019-10-14 22:02:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2019-10-14 22:02:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 2614 transitions. [2019-10-14 22:02:58,739 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 2614 transitions. Word has length 493 [2019-10-14 22:02:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:02:58,740 INFO L462 AbstractCegarLoop]: Abstraction has 2284 states and 2614 transitions. [2019-10-14 22:02:58,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:02:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 2614 transitions. [2019-10-14 22:02:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2019-10-14 22:02:58,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:02:58,749 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:02:58,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:02:58,954 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:02:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:02:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash 962890010, now seen corresponding path program 1 times [2019-10-14 22:02:58,955 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:02:58,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010367959] [2019-10-14 22:02:58,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:58,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:02:58,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:02:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:02:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 498 proven. 119 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2019-10-14 22:03:00,302 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010367959] [2019-10-14 22:03:00,303 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096350070] [2019-10-14 22:03:00,303 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:00,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-14 22:03:00,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:03:00,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-14 22:03:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 865 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2019-10-14 22:03:01,098 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:03:01,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 12 [2019-10-14 22:03:01,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730526401] [2019-10-14 22:03:01,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 22:03:01,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 22:03:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:03:01,102 INFO L87 Difference]: Start difference. First operand 2284 states and 2614 transitions. Second operand 12 states. [2019-10-14 22:03:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:03,244 INFO L93 Difference]: Finished difference Result 4664 states and 5354 transitions. [2019-10-14 22:03:03,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:03:03,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 577 [2019-10-14 22:03:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:03,255 INFO L225 Difference]: With dead ends: 4664 [2019-10-14 22:03:03,255 INFO L226 Difference]: Without dead ends: 2529 [2019-10-14 22:03:03,260 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 596 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 22:03:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2019-10-14 22:03:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2274. [2019-10-14 22:03:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2274 states. [2019-10-14 22:03:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 2525 transitions. [2019-10-14 22:03:03,310 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 2525 transitions. Word has length 577 [2019-10-14 22:03:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:03,311 INFO L462 AbstractCegarLoop]: Abstraction has 2274 states and 2525 transitions. [2019-10-14 22:03:03,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 22:03:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 2525 transitions. [2019-10-14 22:03:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2019-10-14 22:03:03,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:03,319 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:03:03,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:03,525 INFO L410 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:03,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:03,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1279386682, now seen corresponding path program 2 times [2019-10-14 22:03:03,526 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:03,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183103883] [2019-10-14 22:03:03,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:03,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:03,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY