/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:46:13,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:46:13,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:46:13,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:46:13,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:46:13,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:46:13,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:46:13,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:46:13,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:46:13,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:46:13,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:46:13,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:46:13,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:46:13,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:46:13,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:46:13,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:46:13,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:46:13,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:46:13,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:46:13,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:46:13,231 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 [2019-11-06 22:46:13,266 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:46:13,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:46:13,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:46:13,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:46:13,269 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:46:13,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:46:13,269 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:46:13,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:46:13,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:46:13,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:46:13,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:46:13,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:46:13,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:46:13,270 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:46:13,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:46:13,273 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:46:13,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:46:13,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:46:13,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:46:13,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:46:13,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:46:13,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:46:13,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:46:13,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:46:13,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:46:13,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:46:13,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:46:13,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:46:13,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:46:13,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:46:13,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:46:13,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:46:13,569 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:46:13,569 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:46:13,570 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label23.c [2019-11-06 22:46:13,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119298d14/5c0fa0fb3b0b47bf8cc0dcb183eda7a8/FLAG8142961d4 [2019-11-06 22:46:14,212 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:46:14,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label23.c [2019-11-06 22:46:14,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119298d14/5c0fa0fb3b0b47bf8cc0dcb183eda7a8/FLAG8142961d4 [2019-11-06 22:46:14,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119298d14/5c0fa0fb3b0b47bf8cc0dcb183eda7a8 [2019-11-06 22:46:14,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:46:14,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:46:14,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:46:14,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:46:14,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:46:14,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:14" (1/1) ... [2019-11-06 22:46:14,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3f1635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:14, skipping insertion in model container [2019-11-06 22:46:14,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:14" (1/1) ... [2019-11-06 22:46:14,512 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:46:14,571 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:46:15,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:46:15,187 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:46:15,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:46:15,394 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:46:15,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15 WrapperNode [2019-11-06 22:46:15,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:46:15,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:46:15,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:46:15,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:46:15,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (1/1) ... [2019-11-06 22:46:15,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (1/1) ... [2019-11-06 22:46:15,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (1/1) ... [2019-11-06 22:46:15,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (1/1) ... [2019-11-06 22:46:15,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (1/1) ... [2019-11-06 22:46:15,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (1/1) ... [2019-11-06 22:46:15,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (1/1) ... [2019-11-06 22:46:15,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:46:15,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:46:15,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:46:15,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:46:15,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (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 [2019-11-06 22:46:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:46:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:46:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:46:15,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:46:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:46:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:46:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:46:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:46:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:46:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:46:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:46:17,417 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:46:17,418 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:46:17,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:17 BoogieIcfgContainer [2019-11-06 22:46:17,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:46:17,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:46:17,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:46:17,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:46:17,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:14" (1/3) ... [2019-11-06 22:46:17,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64815802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:17, skipping insertion in model container [2019-11-06 22:46:17,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15" (2/3) ... [2019-11-06 22:46:17,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64815802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:17, skipping insertion in model container [2019-11-06 22:46:17,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:17" (3/3) ... [2019-11-06 22:46:17,429 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label23.c [2019-11-06 22:46:17,441 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:46:17,452 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:46:17,465 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:46:17,495 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:46:17,495 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:46:17,496 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:46:17,496 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:46:17,496 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:46:17,496 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:46:17,497 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:46:17,497 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:46:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-11-06 22:46:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 22:46:17,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:46:17,536 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:46:17,538 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:46:17,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:46:17,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1552063366, now seen corresponding path program 1 times [2019-11-06 22:46:17,594 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:46:17,595 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913191414] [2019-11-06 22:46:17,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:46:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:46:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:46:18,007 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913191414] [2019-11-06 22:46:18,008 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:46:18,008 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:46:18,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485789240] [2019-11-06 22:46:18,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:46:18,018 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:46:18,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:46:18,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:46:18,036 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2019-11-06 22:46:19,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:46:19,395 INFO L93 Difference]: Finished difference Result 779 states and 1369 transitions. [2019-11-06 22:46:19,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:46:19,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-11-06 22:46:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:46:19,417 INFO L225 Difference]: With dead ends: 779 [2019-11-06 22:46:19,417 INFO L226 Difference]: Without dead ends: 425 [2019-11-06 22:46:19,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:46:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2019-11-06 22:46:19,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 420. [2019-11-06 22:46:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-11-06 22:46:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 666 transitions. [2019-11-06 22:46:19,544 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 666 transitions. Word has length 71 [2019-11-06 22:46:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:46:19,545 INFO L462 AbstractCegarLoop]: Abstraction has 420 states and 666 transitions. [2019-11-06 22:46:19,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:46:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 666 transitions. [2019-11-06 22:46:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-06 22:46:19,551 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:46:19,552 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:46:19,552 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:46:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:46:19,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1937579030, now seen corresponding path program 1 times [2019-11-06 22:46:19,553 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:46:19,553 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492563532] [2019-11-06 22:46:19,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:46:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:46:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:46:19,879 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492563532] [2019-11-06 22:46:19,880 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:46:19,880 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:46:19,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457929112] [2019-11-06 22:46:19,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:46:19,883 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:46:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:46:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:46:19,883 INFO L87 Difference]: Start difference. First operand 420 states and 666 transitions. Second operand 6 states. [2019-11-06 22:46:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:46:22,628 INFO L93 Difference]: Finished difference Result 1665 states and 2806 transitions. [2019-11-06 22:46:22,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:46:22,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-11-06 22:46:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:46:22,647 INFO L225 Difference]: With dead ends: 1665 [2019-11-06 22:46:22,648 INFO L226 Difference]: Without dead ends: 1251 [2019-11-06 22:46:22,651 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:46:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2019-11-06 22:46:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1217. [2019-11-06 22:46:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2019-11-06 22:46:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1739 transitions. [2019-11-06 22:46:22,727 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1739 transitions. Word has length 141 [2019-11-06 22:46:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:46:22,728 INFO L462 AbstractCegarLoop]: Abstraction has 1217 states and 1739 transitions. [2019-11-06 22:46:22,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:46:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1739 transitions. [2019-11-06 22:46:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-06 22:46:22,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:46:22,734 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:46:22,734 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:46:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:46:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1983928202, now seen corresponding path program 1 times [2019-11-06 22:46:22,735 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:46:22,735 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625237772] [2019-11-06 22:46:22,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:46:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:46:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:46:22,971 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625237772] [2019-11-06 22:46:22,972 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:46:22,972 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:46:22,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030131805] [2019-11-06 22:46:22,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:46:22,973 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:46:22,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:46:22,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:46:22,974 INFO L87 Difference]: Start difference. First operand 1217 states and 1739 transitions. Second operand 6 states. [2019-11-06 22:46:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:46:24,743 INFO L93 Difference]: Finished difference Result 3450 states and 5148 transitions. [2019-11-06 22:46:24,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:46:24,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2019-11-06 22:46:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:46:24,761 INFO L225 Difference]: With dead ends: 3450 [2019-11-06 22:46:24,761 INFO L226 Difference]: Without dead ends: 2239 [2019-11-06 22:46:24,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:46:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2019-11-06 22:46:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2212. [2019-11-06 22:46:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2019-11-06 22:46:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3012 transitions. [2019-11-06 22:46:24,847 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3012 transitions. Word has length 151 [2019-11-06 22:46:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:46:24,848 INFO L462 AbstractCegarLoop]: Abstraction has 2212 states and 3012 transitions. [2019-11-06 22:46:24,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:46:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3012 transitions. [2019-11-06 22:46:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-06 22:46:24,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:46:24,855 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:46:24,855 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:46:24,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:46:24,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1698562555, now seen corresponding path program 1 times [2019-11-06 22:46:24,856 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:46:24,856 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592407072] [2019-11-06 22:46:24,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:46:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:46:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:46:25,077 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592407072] [2019-11-06 22:46:25,077 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192023636] [2019-11-06 22:46:25,077 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 [2019-11-06 22:46:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:46:25,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 22:46:25,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:46:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:46:25,337 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:46:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:46:25,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [584786614] [2019-11-06 22:46:25,514 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 215 [2019-11-06 22:46:25,573 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:46:25,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:46:51,014 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:46:51,015 INFO L272 AbstractInterpreter]: Visited 78 different actions 78 times. Never merged. Never widened. Performed 205 root evaluator evaluations with a maximum evaluation depth of 16. Performed 205 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Never found a fixpoint. Largest state had 28 variables. [2019-11-06 22:46:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:46:51,019 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates