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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:24:54,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:24:54,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:24:54,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:24:54,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 06:24:54,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 06:24:54,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 06:24:54,678 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 06:24:54,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:24:54,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:24:54,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:24:54,693 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:24:54,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:24:54,694 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:24:54,694 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:24:54,694 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:24:54,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:24:54,695 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:24:54,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:24:54,696 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:24:54,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:24:54,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:24:54,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:24:54,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:24:54,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:24:54,697 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:24:54,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:24:54,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:24:54,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:24:54,698 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:24:54,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:24:54,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:24:54,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:24:54,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:24:54,699 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:24:54,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:24:54,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:24:54,699 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:24:54,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:24:54,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:24:54,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:24:54,744 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:24:54,745 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:24:54,745 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2019-09-09 06:24:54,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0ea35b4/599b512a921c4f9296a62eabb575d293/FLAG2d985ea32 [2019-09-09 06:24:55,327 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:24:55,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2019-09-09 06:24:55,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0ea35b4/599b512a921c4f9296a62eabb575d293/FLAG2d985ea32 [2019-09-09 06:24:55,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0ea35b4/599b512a921c4f9296a62eabb575d293 [2019-09-09 06:24:55,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:24:55,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:24:55,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:24:55,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:24:55,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:24:55,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:24:55" (1/1) ... [2019-09-09 06:24:55,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350286e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:55, skipping insertion in model container [2019-09-09 06:24:55,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:24:55" (1/1) ... [2019-09-09 06:24:55,644 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:24:55,707 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:24:56,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:24:56,226 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:24:56,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:24:56,361 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:24:56,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56 WrapperNode [2019-09-09 06:24:56,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:24:56,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:24:56,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:24:56,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:24:56,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (1/1) ... [2019-09-09 06:24:56,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (1/1) ... [2019-09-09 06:24:56,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (1/1) ... [2019-09-09 06:24:56,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (1/1) ... [2019-09-09 06:24:56,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (1/1) ... [2019-09-09 06:24:56,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (1/1) ... [2019-09-09 06:24:56,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (1/1) ... [2019-09-09 06:24:56,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:24:56,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:24:56,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:24:56,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:24:56,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (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 06:24:56,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:24:56,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:24:56,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:24:56,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:24:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:24:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:24:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:24:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:24:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:24:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:24:56,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:24:57,735 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:24:57,736 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:24:57,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:24:57 BoogieIcfgContainer [2019-09-09 06:24:57,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:24:57,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:24:57,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:24:57,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:24:57,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:24:55" (1/3) ... [2019-09-09 06:24:57,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91a0282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:24:57, skipping insertion in model container [2019-09-09 06:24:57,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:24:56" (2/3) ... [2019-09-09 06:24:57,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91a0282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:24:57, skipping insertion in model container [2019-09-09 06:24:57,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:24:57" (3/3) ... [2019-09-09 06:24:57,745 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2019-09-09 06:24:57,755 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:24:57,764 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:24:57,781 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:24:57,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:24:57,809 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:24:57,809 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:24:57,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:24:57,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:24:57,810 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:24:57,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:24:57,810 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:24:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 06:24:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-09 06:24:57,851 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:24:57,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:57,854 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:24:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:24:57,860 INFO L82 PathProgramCache]: Analyzing trace with hash -223585418, now seen corresponding path program 1 times [2019-09-09 06:24:57,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:24:57,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:24:57,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:24:57,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:24:57,919 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:24:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:24:58,467 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 06:24:58,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:24:58,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:24:58,470 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:24:58,480 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:24:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:24:58,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:24:58,499 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 06:24:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:24:59,407 INFO L93 Difference]: Finished difference Result 346 states and 499 transitions. [2019-09-09 06:24:59,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:24:59,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-09-09 06:24:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:24:59,439 INFO L225 Difference]: With dead ends: 346 [2019-09-09 06:24:59,440 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 06:24:59,443 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:24:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 06:24:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 06:24:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 06:24:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-09-09 06:24:59,548 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 138 [2019-09-09 06:24:59,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:24:59,552 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-09-09 06:24:59,552 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:24:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-09-09 06:24:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-09 06:24:59,560 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:24:59,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:59,561 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:24:59,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:24:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash -940546995, now seen corresponding path program 1 times [2019-09-09 06:24:59,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:24:59,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:24:59,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:24:59,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:24:59,563 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:24:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:24:59,722 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 06:24:59,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:24:59,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:24:59,723 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:24:59,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:24:59,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:24:59,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:24:59,726 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-09-09 06:25:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:00,512 INFO L93 Difference]: Finished difference Result 568 states and 814 transitions. [2019-09-09 06:25:00,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:25:00,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-09-09 06:25:00,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:00,521 INFO L225 Difference]: With dead ends: 568 [2019-09-09 06:25:00,521 INFO L226 Difference]: Without dead ends: 568 [2019-09-09 06:25:00,522 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 06:25:00,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-09-09 06:25:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-09-09 06:25:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-09-09 06:25:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2019-09-09 06:25:00,568 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 148 [2019-09-09 06:25:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:00,568 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2019-09-09 06:25:00,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:25:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2019-09-09 06:25:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-09-09 06:25:00,571 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:00,572 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:25:00,572 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:00,573 INFO L82 PathProgramCache]: Analyzing trace with hash -2080872689, now seen corresponding path program 1 times [2019-09-09 06:25:00,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:00,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:00,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:00,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:00,574 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:25:00,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:00,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 06:25:00,936 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:00,937 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 06:25:00,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 06:25:00,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:25:00,938 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 5 states. [2019-09-09 06:25:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:01,552 INFO L93 Difference]: Finished difference Result 655 states and 886 transitions. [2019-09-09 06:25:01,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 06:25:01,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-09-09 06:25:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:01,557 INFO L225 Difference]: With dead ends: 655 [2019-09-09 06:25:01,557 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 06:25:01,558 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:25:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 06:25:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 06:25:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 06:25:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 712 transitions. [2019-09-09 06:25:01,580 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 712 transitions. Word has length 149 [2019-09-09 06:25:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:01,580 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 712 transitions. [2019-09-09 06:25:01,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 06:25:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 712 transitions. [2019-09-09 06:25:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-09-09 06:25:01,583 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:01,584 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:25:01,584 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:01,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:01,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2059513865, now seen corresponding path program 1 times [2019-09-09 06:25:01,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:01,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:01,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:01,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:01,586 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:25:01,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:01,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 06:25:01,878 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:01,878 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 06:25:01,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 06:25:01,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:25:01,879 INFO L87 Difference]: Start difference. First operand 554 states and 712 transitions. Second operand 5 states. [2019-09-09 06:25:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:02,466 INFO L93 Difference]: Finished difference Result 636 states and 796 transitions. [2019-09-09 06:25:02,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 06:25:02,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-09-09 06:25:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:02,472 INFO L225 Difference]: With dead ends: 636 [2019-09-09 06:25:02,472 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 06:25:02,472 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:25:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 06:25:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 06:25:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 06:25:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 708 transitions. [2019-09-09 06:25:02,492 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 708 transitions. Word has length 150 [2019-09-09 06:25:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:02,492 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 708 transitions. [2019-09-09 06:25:02,493 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 06:25:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 708 transitions. [2019-09-09 06:25:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-09-09 06:25:02,495 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:02,495 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:25:02,496 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:02,496 INFO L82 PathProgramCache]: Analyzing trace with hash 938454151, now seen corresponding path program 1 times [2019-09-09 06:25:02,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:02,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:02,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:02,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:02,498 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:25:02,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:02,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:25:02,611 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:02,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:25:02,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:25:02,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:25:02,612 INFO L87 Difference]: Start difference. First operand 554 states and 708 transitions. Second operand 3 states. [2019-09-09 06:25:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:03,074 INFO L93 Difference]: Finished difference Result 826 states and 1042 transitions. [2019-09-09 06:25:03,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:25:03,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2019-09-09 06:25:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:03,081 INFO L225 Difference]: With dead ends: 826 [2019-09-09 06:25:03,081 INFO L226 Difference]: Without dead ends: 826 [2019-09-09 06:25:03,081 INFO L628 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 [2019-09-09 06:25:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2019-09-09 06:25:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2019-09-09 06:25:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2019-09-09 06:25:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1042 transitions. [2019-09-09 06:25:03,115 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1042 transitions. Word has length 153 [2019-09-09 06:25:03,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:03,117 INFO L475 AbstractCegarLoop]: Abstraction has 826 states and 1042 transitions. [2019-09-09 06:25:03,117 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:25:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1042 transitions. [2019-09-09 06:25:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-09-09 06:25:03,121 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:03,121 INFO L399 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] [2019-09-09 06:25:03,121 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:03,122 INFO L82 PathProgramCache]: Analyzing trace with hash 486289531, now seen corresponding path program 1 times [2019-09-09 06:25:03,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:03,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:03,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:03,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:03,126 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:25:03,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:03,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 06:25:03,278 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:03,278 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 06:25:03,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 06:25:03,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 06:25:03,279 INFO L87 Difference]: Start difference. First operand 826 states and 1042 transitions. Second operand 4 states. [2019-09-09 06:25:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:04,120 INFO L93 Difference]: Finished difference Result 1094 states and 1309 transitions. [2019-09-09 06:25:04,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 06:25:04,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2019-09-09 06:25:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:04,122 INFO L225 Difference]: With dead ends: 1094 [2019-09-09 06:25:04,122 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 06:25:04,122 INFO L628 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 [2019-09-09 06:25:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 06:25:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 06:25:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 06:25:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 06:25:04,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 191 [2019-09-09 06:25:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:04,124 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 06:25:04,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 06:25:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 06:25:04,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 06:25:04,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 06:25:04 BoogieIcfgContainer [2019-09-09 06:25:04,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 06:25:04,134 INFO L168 Benchmark]: Toolchain (without parser) took 8504.57 ms. Allocated memory was 133.2 MB in the beginning and 370.1 MB in the end (delta: 237.0 MB). Free memory was 87.7 MB in the beginning and 94.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 230.6 MB. Max. memory is 7.1 GB. [2019-09-09 06:25:04,135 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 06:25:04,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.37 ms. Allocated memory was 133.2 MB in the beginning and 201.3 MB in the end (delta: 68.2 MB). Free memory was 87.5 MB in the beginning and 158.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2019-09-09 06:25:04,136 INFO L168 Benchmark]: Boogie Preprocessor took 99.15 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 152.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2019-09-09 06:25:04,137 INFO L168 Benchmark]: RCFGBuilder took 1276.20 ms. Allocated memory was 201.3 MB in the beginning and 226.0 MB in the end (delta: 24.6 MB). Free memory was 152.9 MB in the beginning and 169.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2019-09-09 06:25:04,139 INFO L168 Benchmark]: TraceAbstraction took 6392.61 ms. Allocated memory was 226.0 MB in the beginning and 370.1 MB in the end (delta: 144.2 MB). Free memory was 169.0 MB in the beginning and 94.1 MB in the end (delta: 75.0 MB). Peak memory consumption was 219.1 MB. Max. memory is 7.1 GB. [2019-09-09 06:25:04,143 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.37 ms. Allocated memory was 133.2 MB in the beginning and 201.3 MB in the end (delta: 68.2 MB). Free memory was 87.5 MB in the beginning and 158.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.15 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 152.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1276.20 ms. Allocated memory was 201.3 MB in the beginning and 226.0 MB in the end (delta: 24.6 MB). Free memory was 152.9 MB in the beginning and 169.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6392.61 ms. Allocated memory was 226.0 MB in the beginning and 370.1 MB in the end (delta: 144.2 MB). Free memory was 169.0 MB in the beginning and 94.1 MB in the end (delta: 75.0 MB). Peak memory consumption was 219.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 572]: 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, 6.3s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 4.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 502 SDtfs, 1237 SDslu, 122 SDs, 0 SdLazy, 2807 SolverSat, 472 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=826occurred 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: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 929 NumberOfCodeBlocks, 929 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 923 ConstructedInterpolants, 0 QuantifiedInterpolants, 923885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 86/86 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...