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/Problem01_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:54:43,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:54:43,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:54:43,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:54:43,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:54:43,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:54:43,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:54:43,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:54:43,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:54:43,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:54:43,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:54:43,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:54:43,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:54:43,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:54:43,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:54:43,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:54:43,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:54:43,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:54:43,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:54:43,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:54:43,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:54:43,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:54:43,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:54:43,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:54:43,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:54:43,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:54:43,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:54:43,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:54:43,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:54:43,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:54:43,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:54:43,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:54:43,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:54:43,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:54:43,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:54:43,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:54:43,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:54:43,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:54:43,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:54:43,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:54:43,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:54:43,270 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 23:54:43,293 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:54:43,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:54:43,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:54:43,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:54:43,296 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:54:43,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:54:43,296 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:54:43,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:54:43,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:54:43,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:54:43,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:54:43,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:54:43,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:54:43,299 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:54:43,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:54:43,299 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:54:43,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:54:43,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:54:43,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:54:43,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:54:43,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:54:43,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:54:43,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:54:43,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:54:43,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:54:43,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:54:43,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:54:43,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:54:43,302 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 [2019-10-14 23:54:43,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:54:43,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:54:43,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:54:43,575 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:54:43,575 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:54:43,576 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2019-10-14 23:54:43,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a9b77b4/f90dba4c261d4b4898802641bb3698bf/FLAG072ff99bf [2019-10-14 23:54:44,231 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:54:44,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2019-10-14 23:54:44,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a9b77b4/f90dba4c261d4b4898802641bb3698bf/FLAG072ff99bf [2019-10-14 23:54:44,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a9b77b4/f90dba4c261d4b4898802641bb3698bf [2019-10-14 23:54:44,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:54:44,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:54:44,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:54:44,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:54:44,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:54:44,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b7cb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:44, skipping insertion in model container [2019-10-14 23:54:44,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:54:44" (1/1) ... [2019-10-14 23:54:44,559 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:54:44,623 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:54:45,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:54:45,176 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:54:45,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:54:45,291 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:54:45,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45 WrapperNode [2019-10-14 23:54:45,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:54:45,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:54:45,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:54:45,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:54:45,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (1/1) ... [2019-10-14 23:54:45,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (1/1) ... [2019-10-14 23:54:45,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (1/1) ... [2019-10-14 23:54:45,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (1/1) ... [2019-10-14 23:54:45,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (1/1) ... [2019-10-14 23:54:45,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (1/1) ... [2019-10-14 23:54:45,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (1/1) ... [2019-10-14 23:54:45,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:54:45,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:54:45,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:54:45,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:54:45,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (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 23:54:45,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:54:45,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:54:45,476 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:54:45,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:54:45,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:54:45,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:54:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:54:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:54:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:54:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:54:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:54:46,578 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:54:46,578 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:54:46,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:54:46 BoogieIcfgContainer [2019-10-14 23:54:46,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:54:46,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:54:46,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:54:46,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:54:46,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:54:44" (1/3) ... [2019-10-14 23:54:46,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6610be15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:54:46, skipping insertion in model container [2019-10-14 23:54:46,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:45" (2/3) ... [2019-10-14 23:54:46,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6610be15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:54:46, skipping insertion in model container [2019-10-14 23:54:46,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:54:46" (3/3) ... [2019-10-14 23:54:46,590 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2019-10-14 23:54:46,600 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:54:46,609 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:54:46,621 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:54:46,657 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:54:46,657 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:54:46,657 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:54:46,657 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:54:46,658 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:54:46,658 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:54:46,658 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:54:46,658 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:54:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-14 23:54:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-14 23:54:46,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:46,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:46,715 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:46,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1447421978, now seen corresponding path program 1 times [2019-10-14 23:54:46,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:46,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977933024] [2019-10-14 23:54:46,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:46,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:46,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:47,218 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 23:54:47,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977933024] [2019-10-14 23:54:47,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:47,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:54:47,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522129657] [2019-10-14 23:54:47,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:54:47,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:54:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:54:47,245 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-14 23:54:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:48,140 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2019-10-14 23:54:48,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:54:48,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-14 23:54:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:48,168 INFO L225 Difference]: With dead ends: 547 [2019-10-14 23:54:48,168 INFO L226 Difference]: Without dead ends: 278 [2019-10-14 23:54:48,179 INFO L600 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 [2019-10-14 23:54:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-14 23:54:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-14 23:54:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-14 23:54:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 406 transitions. [2019-10-14 23:54:48,250 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 406 transitions. Word has length 118 [2019-10-14 23:54:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:48,252 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 406 transitions. [2019-10-14 23:54:48,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:54:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 406 transitions. [2019-10-14 23:54:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 23:54:48,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:48,257 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:48,257 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:48,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:48,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1793818301, now seen corresponding path program 1 times [2019-10-14 23:54:48,258 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:48,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229972405] [2019-10-14 23:54:48,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:48,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:48,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:48,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229972405] [2019-10-14 23:54:48,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:48,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:54:48,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970449012] [2019-10-14 23:54:48,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:54:48,436 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:48,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:54:48,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:54:48,436 INFO L87 Difference]: Start difference. First operand 278 states and 406 transitions. Second operand 5 states. [2019-10-14 23:54:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:49,163 INFO L93 Difference]: Finished difference Result 840 states and 1253 transitions. [2019-10-14 23:54:49,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:54:49,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-10-14 23:54:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:49,171 INFO L225 Difference]: With dead ends: 840 [2019-10-14 23:54:49,172 INFO L226 Difference]: Without dead ends: 568 [2019-10-14 23:54:49,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:54:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-14 23:54:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 558. [2019-10-14 23:54:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-14 23:54:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 787 transitions. [2019-10-14 23:54:49,215 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 787 transitions. Word has length 127 [2019-10-14 23:54:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:49,216 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 787 transitions. [2019-10-14 23:54:49,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:54:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 787 transitions. [2019-10-14 23:54:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:54:49,222 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:49,223 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:49,223 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:49,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:49,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1554407470, now seen corresponding path program 1 times [2019-10-14 23:54:49,224 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:49,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750448532] [2019-10-14 23:54:49,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:49,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:49,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:49,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750448532] [2019-10-14 23:54:49,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769561523] [2019-10-14 23:54:49,397 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 23:54:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:49,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:54:49,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:54:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:49,633 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:54:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:49,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [579613407] [2019-10-14 23:54:49,735 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 153 [2019-10-14 23:54:49,811 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:54:49,812 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)