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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:12:50,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:12:50,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:12:50,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 06:12:50,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 06:12:50,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 06:12:50,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 06:12:50,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 06:12:50,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 06:12:50,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 06:12:50,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 06:12:50,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 06:12:50,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 06:12:50,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 06:12:50,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 06:12:50,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 06:12:50,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 06:12:50,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 06:12:50,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 06:12:50,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 06:12:50,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 06:12:50,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 06:12:50,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 06:12:50,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 06:12:50,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 06:12:50,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 06:12:50,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 06:12:50,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 06:12:50,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 06:12:50,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 06:12:50,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 06:12:50,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 06:12:50,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 06:12:50,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 06:12:50,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 06:12:50,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 06:12:50,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 06:12:50,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 06:12:50,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 06:12:50,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 06:12:50,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 06:12:50,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 06:12:50,217 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:12:50,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:12:50,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:12:50,218 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:12:50,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:12:50,219 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:12:50,219 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:12:50,219 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:12:50,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:12:50,220 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:12:50,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:12:50,220 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:12:50,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:12:50,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:12:50,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:12:50,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:12:50,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:12:50,222 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:12:50,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:12:50,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:12:50,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:12:50,222 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:12:50,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:12:50,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:12:50,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:12:50,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:12:50,223 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:12:50,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:12:50,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:12:50,224 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:12:50,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:12:50,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:12:50,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:12:50,272 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:12:50,272 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:12:50,273 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2019-09-09 06:12:50,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f398147/c8481c73038348a79b40cecda4b22641/FLAG39a8accad [2019-09-09 06:12:50,947 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:12:50,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2019-09-09 06:12:50,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f398147/c8481c73038348a79b40cecda4b22641/FLAG39a8accad [2019-09-09 06:12:51,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f398147/c8481c73038348a79b40cecda4b22641 [2019-09-09 06:12:51,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:12:51,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:12:51,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:12:51,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:12:51,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:12:51,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:51,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df8f01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51, skipping insertion in model container [2019-09-09 06:12:51,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:51,229 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:12:51,279 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:12:51,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:12:51,766 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:12:51,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:12:51,956 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:12:51,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51 WrapperNode [2019-09-09 06:12:51,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:12:51,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:12:51,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:12:51,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:12:51,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:51,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:51,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:51,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:52,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:52,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:52,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (1/1) ... [2019-09-09 06:12:52,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:12:52,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:12:52,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:12:52,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:12:52,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (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 [2019-09-09 06:12:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:12:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:12:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:12:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:12:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:12:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:12:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:12:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:12:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:12:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:12:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:12:53,304 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:12:53,305 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:12:53,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:12:53 BoogieIcfgContainer [2019-09-09 06:12:53,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:12:53,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:12:53,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:12:53,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:12:53,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:12:51" (1/3) ... [2019-09-09 06:12:53,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76324336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:12:53, skipping insertion in model container [2019-09-09 06:12:53,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:12:51" (2/3) ... [2019-09-09 06:12:53,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76324336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:12:53, skipping insertion in model container [2019-09-09 06:12:53,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:12:53" (3/3) ... [2019-09-09 06:12:53,322 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2019-09-09 06:12:53,337 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:12:53,347 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:12:53,365 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:12:53,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:12:53,397 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:12:53,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:12:53,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:12:53,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:12:53,398 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:12:53,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:12:53,398 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:12:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 06:12:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-09 06:12:53,464 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:12:53,465 INFO L399 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] [2019-09-09 06:12:53,467 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:12:53,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:12:53,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1379021910, now seen corresponding path program 1 times [2019-09-09 06:12:53,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:12:53,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:12:53,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:12:53,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:12:53,529 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:12:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:12:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:12:54,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:12:54,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 06:12:54,029 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:12:54,035 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 06:12:54,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 06:12:54,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 06:12:54,054 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2019-09-09 06:12:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:12:55,045 INFO L93 Difference]: Finished difference Result 346 states and 505 transitions. [2019-09-09 06:12:55,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:12:55,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-09-09 06:12:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:12:55,070 INFO L225 Difference]: With dead ends: 346 [2019-09-09 06:12:55,070 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 06:12:55,072 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 06:12:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 06:12:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 06:12:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 06:12:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2019-09-09 06:12:55,149 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 98 [2019-09-09 06:12:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:12:55,150 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2019-09-09 06:12:55,150 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 06:12:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2019-09-09 06:12:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-09 06:12:55,156 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:12:55,156 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 06:12:55,157 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:12:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:12:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1132011565, now seen corresponding path program 1 times [2019-09-09 06:12:55,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:12:55,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:12:55,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:12:55,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:12:55,159 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:12:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:12:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:12:55,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:12:55,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:12:55,252 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:12:55,254 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:12:55,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:12:55,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:12:55,255 INFO L87 Difference]: Start difference. First operand 278 states and 412 transitions. Second operand 6 states. [2019-09-09 06:12:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:12:56,084 INFO L93 Difference]: Finished difference Result 429 states and 635 transitions. [2019-09-09 06:12:56,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:12:56,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-09 06:12:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:12:56,085 INFO L225 Difference]: With dead ends: 429 [2019-09-09 06:12:56,085 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 06:12:56,086 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 06:12:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 06:12:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 06:12:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 06:12:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 06:12:56,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2019-09-09 06:12:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:12:56,088 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 06:12:56,088 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:12:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 06:12:56,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 06:12:56,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 06:12:56 BoogieIcfgContainer [2019-09-09 06:12:56,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 06:12:56,096 INFO L168 Benchmark]: Toolchain (without parser) took 4882.97 ms. Allocated memory was 133.7 MB in the beginning and 263.2 MB in the end (delta: 129.5 MB). Free memory was 87.6 MB in the beginning and 163.0 MB in the end (delta: -75.4 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2019-09-09 06:12:56,097 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 108.1 MB in the beginning and 107.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 06:12:56,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.05 ms. Allocated memory was 133.7 MB in the beginning and 201.9 MB in the end (delta: 68.2 MB). Free memory was 87.4 MB in the beginning and 158.7 MB in the end (delta: -71.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2019-09-09 06:12:56,099 INFO L168 Benchmark]: Boogie Preprocessor took 121.32 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 153.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-09-09 06:12:56,100 INFO L168 Benchmark]: RCFGBuilder took 1227.59 ms. Allocated memory was 201.9 MB in the beginning and 227.0 MB in the end (delta: 25.2 MB). Free memory was 153.6 MB in the beginning and 170.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2019-09-09 06:12:56,101 INFO L168 Benchmark]: TraceAbstraction took 2785.90 ms. Allocated memory was 227.0 MB in the beginning and 263.2 MB in the end (delta: 36.2 MB). Free memory was 170.0 MB in the beginning and 163.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-09-09 06:12:56,105 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 108.1 MB in the beginning and 107.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.05 ms. Allocated memory was 133.7 MB in the beginning and 201.9 MB in the end (delta: 68.2 MB). Free memory was 87.4 MB in the beginning and 158.7 MB in the end (delta: -71.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.32 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 153.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1227.59 ms. Allocated memory was 201.9 MB in the beginning and 227.0 MB in the end (delta: 25.2 MB). Free memory was 153.6 MB in the beginning and 170.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2785.90 ms. Allocated memory was 227.0 MB in the beginning and 263.2 MB in the end (delta: 36.2 MB). Free memory was 170.0 MB in the beginning and 163.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 452]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 647 SDslu, 69 SDs, 0 SdLazy, 1182 SolverSat, 232 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 94814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 7/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...