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/Problem14_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 20:21:01,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 20:21:01,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 20:21:01,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 20:21:01,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 20:21:01,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 20:21:01,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 20:21:01,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 20:21:01,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 20:21:01,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 20:21:01,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 20:21:01,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 20:21:01,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 20:21:01,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 20:21:01,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 20:21:01,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 20:21:01,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 20:21:01,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 20:21:01,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 20:21:01,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 20:21:01,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 20:21:01,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 20:21:01,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 20:21:01,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 20:21:01,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 20:21:01,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 20:21:01,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 20:21:01,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 20:21:01,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 20:21:01,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 20:21:01,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 20:21:01,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 20:21:01,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 20:21:01,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 20:21:01,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 20:21:01,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 20:21:01,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 20:21:01,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 20:21:01,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 20:21:01,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 20:21:01,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 20:21:01,385 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 [2019-10-02 20:21:01,400 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 20:21:01,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 20:21:01,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 20:21:01,401 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 20:21:01,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 20:21:01,402 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 20:21:01,402 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 20:21:01,403 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 20:21:01,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 20:21:01,403 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 20:21:01,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 20:21:01,404 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 20:21:01,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 20:21:01,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 20:21:01,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 20:21:01,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 20:21:01,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 20:21:01,405 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 20:21:01,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 20:21:01,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 20:21:01,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 20:21:01,406 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 20:21:01,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 20:21:01,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 20:21:01,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 20:21:01,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 20:21:01,407 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 20:21:01,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 20:21:01,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 20:21:01,407 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 20:21:01,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 20:21:01,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 20:21:01,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 20:21:01,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 20:21:01,454 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 20:21:01,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label03.c [2019-10-02 20:21:01,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b425657f/083ee8e26b164637b41c5b1180475339/FLAG6720b5e7a [2019-10-02 20:21:02,069 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 20:21:02,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label03.c [2019-10-02 20:21:02,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b425657f/083ee8e26b164637b41c5b1180475339/FLAG6720b5e7a [2019-10-02 20:21:02,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b425657f/083ee8e26b164637b41c5b1180475339 [2019-10-02 20:21:02,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 20:21:02,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 20:21:02,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 20:21:02,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 20:21:02,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 20:21:02,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 08:21:02" (1/1) ... [2019-10-02 20:21:02,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c97aa4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:02, skipping insertion in model container [2019-10-02 20:21:02,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 08:21:02" (1/1) ... [2019-10-02 20:21:02,383 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 20:21:02,436 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 20:21:03,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 20:21:03,197 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 20:21:03,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 20:21:03,387 INFO L192 MainTranslator]: Completed translation [2019-10-02 20:21:03,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03 WrapperNode [2019-10-02 20:21:03,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 20:21:03,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 20:21:03,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 20:21:03,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 20:21:03,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (1/1) ... [2019-10-02 20:21:03,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (1/1) ... [2019-10-02 20:21:03,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (1/1) ... [2019-10-02 20:21:03,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (1/1) ... [2019-10-02 20:21:03,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (1/1) ... [2019-10-02 20:21:03,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (1/1) ... [2019-10-02 20:21:03,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (1/1) ... [2019-10-02 20:21:03,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 20:21:03,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 20:21:03,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 20:21:03,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 20:21:03,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (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 [2019-10-02 20:21:03,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 20:21:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 20:21:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 20:21:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 20:21:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 20:21:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 20:21:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 20:21:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 20:21:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 20:21:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 20:21:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 20:21:05,128 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 20:21:05,128 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 20:21:05,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 08:21:05 BoogieIcfgContainer [2019-10-02 20:21:05,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 20:21:05,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 20:21:05,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 20:21:05,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 20:21:05,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 08:21:02" (1/3) ... [2019-10-02 20:21:05,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da68df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 08:21:05, skipping insertion in model container [2019-10-02 20:21:05,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:21:03" (2/3) ... [2019-10-02 20:21:05,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da68df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 08:21:05, skipping insertion in model container [2019-10-02 20:21:05,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 08:21:05" (3/3) ... [2019-10-02 20:21:05,148 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label03.c [2019-10-02 20:21:05,162 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 20:21:05,172 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 20:21:05,195 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 20:21:05,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 20:21:05,238 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 20:21:05,239 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 20:21:05,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 20:21:05,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 20:21:05,239 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 20:21:05,240 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 20:21:05,240 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 20:21:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-02 20:21:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-02 20:21:05,304 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:21:05,306 INFO L411 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] [2019-10-02 20:21:05,308 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:21:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:21:05,319 INFO L82 PathProgramCache]: Analyzing trace with hash -134949414, now seen corresponding path program 1 times [2019-10-02 20:21:05,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:21:05,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:05,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:21:05,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:05,407 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:21:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:21:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:21:05,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:21:05,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 20:21:05,808 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:21:05,815 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 20:21:05,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 20:21:05,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 20:21:05,834 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2019-10-02 20:21:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:21:07,179 INFO L93 Difference]: Finished difference Result 440 states and 711 transitions. [2019-10-02 20:21:07,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 20:21:07,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-02 20:21:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:21:07,217 INFO L225 Difference]: With dead ends: 440 [2019-10-02 20:21:07,217 INFO L226 Difference]: Without dead ends: 372 [2019-10-02 20:21:07,220 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 20:21:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2019-10-02 20:21:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2019-10-02 20:21:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-10-02 20:21:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 602 transitions. [2019-10-02 20:21:07,355 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 602 transitions. Word has length 57 [2019-10-02 20:21:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:21:07,356 INFO L475 AbstractCegarLoop]: Abstraction has 372 states and 602 transitions. [2019-10-02 20:21:07,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 20:21:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 602 transitions. [2019-10-02 20:21:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-02 20:21:07,372 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:21:07,373 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:21:07,373 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:21:07,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:21:07,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1948270641, now seen corresponding path program 1 times [2019-10-02 20:21:07,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:21:07,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:07,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:21:07,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:07,378 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:21:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:21:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:21:07,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:21:07,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 20:21:07,611 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:21:07,614 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 20:21:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 20:21:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 20:21:07,615 INFO L87 Difference]: Start difference. First operand 372 states and 602 transitions. Second operand 6 states. [2019-10-02 20:21:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:21:08,968 INFO L93 Difference]: Finished difference Result 756 states and 1199 transitions. [2019-10-02 20:21:08,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 20:21:08,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-10-02 20:21:08,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:21:08,993 INFO L225 Difference]: With dead ends: 756 [2019-10-02 20:21:08,994 INFO L226 Difference]: Without dead ends: 756 [2019-10-02 20:21:08,995 INFO L640 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 [2019-10-02 20:21:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2019-10-02 20:21:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 752. [2019-10-02 20:21:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-10-02 20:21:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1190 transitions. [2019-10-02 20:21:09,038 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1190 transitions. Word has length 126 [2019-10-02 20:21:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:21:09,039 INFO L475 AbstractCegarLoop]: Abstraction has 752 states and 1190 transitions. [2019-10-02 20:21:09,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 20:21:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1190 transitions. [2019-10-02 20:21:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-02 20:21:09,041 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:21:09,042 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:21:09,042 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:21:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:21:09,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1769103958, now seen corresponding path program 1 times [2019-10-02 20:21:09,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:21:09,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:09,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:21:09,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:09,045 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:21:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:21:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:21:09,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:21:09,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 20:21:09,179 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:21:09,181 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 20:21:09,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 20:21:09,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 20:21:09,182 INFO L87 Difference]: Start difference. First operand 752 states and 1190 transitions. Second operand 5 states. [2019-10-02 20:21:10,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:21:10,459 INFO L93 Difference]: Finished difference Result 1158 states and 1699 transitions. [2019-10-02 20:21:10,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 20:21:10,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-10-02 20:21:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:21:10,470 INFO L225 Difference]: With dead ends: 1158 [2019-10-02 20:21:10,470 INFO L226 Difference]: Without dead ends: 1158 [2019-10-02 20:21:10,471 INFO L640 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 [2019-10-02 20:21:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2019-10-02 20:21:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1138. [2019-10-02 20:21:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2019-10-02 20:21:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1632 transitions. [2019-10-02 20:21:10,515 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1632 transitions. Word has length 127 [2019-10-02 20:21:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:21:10,516 INFO L475 AbstractCegarLoop]: Abstraction has 1138 states and 1632 transitions. [2019-10-02 20:21:10,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 20:21:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1632 transitions. [2019-10-02 20:21:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-02 20:21:10,519 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:21:10,520 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:21:10,520 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:21:10,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:21:10,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1462937402, now seen corresponding path program 1 times [2019-10-02 20:21:10,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:21:10,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:10,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:21:10,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:10,523 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:21:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:21:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:21:10,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:21:10,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 20:21:10,683 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:21:10,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 20:21:10,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 20:21:10,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 20:21:10,684 INFO L87 Difference]: Start difference. First operand 1138 states and 1632 transitions. Second operand 5 states. [2019-10-02 20:21:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:21:12,007 INFO L93 Difference]: Finished difference Result 1750 states and 2413 transitions. [2019-10-02 20:21:12,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 20:21:12,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2019-10-02 20:21:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:21:12,025 INFO L225 Difference]: With dead ends: 1750 [2019-10-02 20:21:12,025 INFO L226 Difference]: Without dead ends: 1750 [2019-10-02 20:21:12,026 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 20:21:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-10-02 20:21:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1514. [2019-10-02 20:21:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2019-10-02 20:21:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2084 transitions. [2019-10-02 20:21:12,181 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2084 transitions. Word has length 129 [2019-10-02 20:21:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:21:12,184 INFO L475 AbstractCegarLoop]: Abstraction has 1514 states and 2084 transitions. [2019-10-02 20:21:12,184 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 20:21:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2084 transitions. [2019-10-02 20:21:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-02 20:21:12,187 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:21:12,187 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:21:12,188 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:21:12,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:21:12,189 INFO L82 PathProgramCache]: Analyzing trace with hash -660546695, now seen corresponding path program 1 times [2019-10-02 20:21:12,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:21:12,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:12,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:21:12,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:12,193 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:21:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:21:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:21:12,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:21:12,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 20:21:12,380 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:21:12,381 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 20:21:12,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 20:21:12,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 20:21:12,382 INFO L87 Difference]: Start difference. First operand 1514 states and 2084 transitions. Second operand 5 states. [2019-10-02 20:21:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:21:14,057 INFO L93 Difference]: Finished difference Result 2504 states and 3256 transitions. [2019-10-02 20:21:14,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 20:21:14,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-10-02 20:21:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:21:14,068 INFO L225 Difference]: With dead ends: 2504 [2019-10-02 20:21:14,069 INFO L226 Difference]: Without dead ends: 2062 [2019-10-02 20:21:14,069 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-02 20:21:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2019-10-02 20:21:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1692. [2019-10-02 20:21:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2019-10-02 20:21:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 1958 transitions. [2019-10-02 20:21:14,132 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 1958 transitions. Word has length 130 [2019-10-02 20:21:14,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:21:14,132 INFO L475 AbstractCegarLoop]: Abstraction has 1692 states and 1958 transitions. [2019-10-02 20:21:14,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 20:21:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 1958 transitions. [2019-10-02 20:21:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-02 20:21:14,136 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:21:14,137 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:21:14,137 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:21:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:21:14,138 INFO L82 PathProgramCache]: Analyzing trace with hash -606122255, now seen corresponding path program 1 times [2019-10-02 20:21:14,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:21:14,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:14,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:21:14,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:21:14,142 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:21:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:21:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:21:14,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:21:14,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 20:21:14,298 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:21:14,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 20:21:14,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 20:21:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 20:21:14,299 INFO L87 Difference]: Start difference. First operand 1692 states and 1958 transitions. Second operand 4 states. [2019-10-02 20:21:15,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:21:15,632 INFO L93 Difference]: Finished difference Result 2798 states and 3197 transitions. [2019-10-02 20:21:15,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 20:21:15,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2019-10-02 20:21:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:21:15,636 INFO L225 Difference]: With dead ends: 2798 [2019-10-02 20:21:15,636 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 20:21:15,636 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 20:21:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 20:21:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 20:21:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 20:21:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 20:21:15,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2019-10-02 20:21:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:21:15,640 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 20:21:15,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 20:21:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 20:21:15,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 20:21:15,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 08:21:15 BoogieIcfgContainer [2019-10-02 20:21:15,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 20:21:15,654 INFO L168 Benchmark]: Toolchain (without parser) took 13286.38 ms. Allocated memory was 132.1 MB in the beginning and 404.2 MB in the end (delta: 272.1 MB). Free memory was 85.2 MB in the beginning and 331.7 MB in the end (delta: -246.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-10-02 20:21:15,656 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.1 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 20:21:15,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1022.28 ms. Allocated memory was 132.1 MB in the beginning and 202.9 MB in the end (delta: 70.8 MB). Free memory was 85.0 MB in the beginning and 151.4 MB in the end (delta: -66.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-10-02 20:21:15,659 INFO L168 Benchmark]: Boogie Preprocessor took 184.46 ms. Allocated memory is still 202.9 MB. Free memory was 151.4 MB in the beginning and 146.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2019-10-02 20:21:15,662 INFO L168 Benchmark]: RCFGBuilder took 1559.09 ms. Allocated memory was 202.9 MB in the beginning and 222.8 MB in the end (delta: 19.9 MB). Free memory was 146.1 MB in the beginning and 139.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2019-10-02 20:21:15,663 INFO L168 Benchmark]: TraceAbstraction took 10512.24 ms. Allocated memory was 222.8 MB in the beginning and 404.2 MB in the end (delta: 181.4 MB). Free memory was 139.2 MB in the beginning and 331.7 MB in the end (delta: -192.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 20:21:15,679 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 132.1 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1022.28 ms. Allocated memory was 132.1 MB in the beginning and 202.9 MB in the end (delta: 70.8 MB). Free memory was 85.0 MB in the beginning and 151.4 MB in the end (delta: -66.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.46 ms. Allocated memory is still 202.9 MB. Free memory was 151.4 MB in the beginning and 146.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1559.09 ms. Allocated memory was 202.9 MB in the beginning and 222.8 MB in the end (delta: 19.9 MB). Free memory was 146.1 MB in the beginning and 139.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10512.24 ms. Allocated memory was 222.8 MB in the beginning and 404.2 MB in the end (delta: 181.4 MB). Free memory was 139.2 MB in the beginning and 331.7 MB in the end (delta: -192.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 157]: 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, 254 locations, 1 error locations. SAFE Result, 10.4s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 8.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 380 SDtfs, 2651 SDslu, 178 SDs, 0 SdLazy, 5047 SolverSat, 1142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1692occurred in iteration=5, 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: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 630 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 791 NumberOfCodeBlocks, 791 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 785 ConstructedInterpolants, 0 QuantifiedInterpolants, 321291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 250/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...