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/Problem03_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 07:35:44,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 07:35:44,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 07:35:44,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 07:35:44,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 07:35:44,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 07:35:44,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 07:35:44,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 07:35:44,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 07:35:44,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 07:35:44,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 07:35:44,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 07:35:44,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 07:35:44,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 07:35:44,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 07:35:44,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 07:35:44,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 07:35:44,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 07:35:44,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 07:35:44,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 07:35:44,662 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 07:35:44,677 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 07:35:44,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 07:35:44,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 07:35:44,677 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 07:35:44,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 07:35:44,678 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 07:35:44,678 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 07:35:44,679 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 07:35:44,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 07:35:44,679 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 07:35:44,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 07:35:44,680 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 07:35:44,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 07:35:44,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 07:35:44,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 07:35:44,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 07:35:44,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 07:35:44,681 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 07:35:44,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 07:35:44,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 07:35:44,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 07:35:44,682 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 07:35:44,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 07:35:44,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 07:35:44,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 07:35:44,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 07:35:44,683 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 07:35:44,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 07:35:44,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 07:35:44,683 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 07:35:44,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 07:35:44,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 07:35:44,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 07:35:44,729 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 07:35:44,729 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 07:35:44,730 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2019-09-09 07:35:44,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25eca35e0/dbbcfc244e3b4fdda04b997843013440/FLAG6d4fee382 [2019-09-09 07:35:45,457 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 07:35:45,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2019-09-09 07:35:45,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25eca35e0/dbbcfc244e3b4fdda04b997843013440/FLAG6d4fee382 [2019-09-09 07:35:45,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25eca35e0/dbbcfc244e3b4fdda04b997843013440 [2019-09-09 07:35:45,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 07:35:45,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 07:35:45,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 07:35:45,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 07:35:45,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 07:35:45,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:35:45" (1/1) ... [2019-09-09 07:35:45,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf01bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:45, skipping insertion in model container [2019-09-09 07:35:45,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:35:45" (1/1) ... [2019-09-09 07:35:45,646 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 07:35:45,737 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 07:35:46,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:35:46,519 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 07:35:46,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:35:46,882 INFO L192 MainTranslator]: Completed translation [2019-09-09 07:35:46,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46 WrapperNode [2019-09-09 07:35:46,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 07:35:46,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 07:35:46,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 07:35:46,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 07:35:46,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (1/1) ... [2019-09-09 07:35:46,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (1/1) ... [2019-09-09 07:35:46,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (1/1) ... [2019-09-09 07:35:46,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (1/1) ... [2019-09-09 07:35:47,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (1/1) ... [2019-09-09 07:35:47,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (1/1) ... [2019-09-09 07:35:47,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (1/1) ... [2019-09-09 07:35:47,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 07:35:47,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 07:35:47,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 07:35:47,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 07:35:47,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (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 07:35:47,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 07:35:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 07:35:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 07:35:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 07:35:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 07:35:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 07:35:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 07:35:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 07:35:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 07:35:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 07:35:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 07:35:49,318 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 07:35:49,318 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 07:35:49,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:35:49 BoogieIcfgContainer [2019-09-09 07:35:49,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 07:35:49,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 07:35:49,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 07:35:49,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 07:35:49,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:35:45" (1/3) ... [2019-09-09 07:35:49,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7a2dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:35:49, skipping insertion in model container [2019-09-09 07:35:49,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:35:46" (2/3) ... [2019-09-09 07:35:49,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7a2dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:35:49, skipping insertion in model container [2019-09-09 07:35:49,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:35:49" (3/3) ... [2019-09-09 07:35:49,327 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label26.c [2019-09-09 07:35:49,337 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 07:35:49,345 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 07:35:49,362 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 07:35:49,388 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 07:35:49,388 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 07:35:49,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 07:35:49,389 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 07:35:49,389 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 07:35:49,389 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 07:35:49,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 07:35:49,389 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 07:35:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-09 07:35:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-09-09 07:35:49,432 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:35:49,434 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, 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 07:35:49,436 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:35:49,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:35:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash -142295563, now seen corresponding path program 1 times [2019-09-09 07:35:49,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:35:49,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:49,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:35:49,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:49,494 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:35:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:35:50,346 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 07:35:50,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:35:50,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 07:35:50,349 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:35:50,356 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 07:35:50,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 07:35:50,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:35:50,373 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-09 07:35:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:35:52,445 INFO L93 Difference]: Finished difference Result 749 states and 1187 transitions. [2019-09-09 07:35:52,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 07:35:52,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-09-09 07:35:52,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:35:52,472 INFO L225 Difference]: With dead ends: 749 [2019-09-09 07:35:52,473 INFO L226 Difference]: Without dead ends: 677 [2019-09-09 07:35:52,474 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:35:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2019-09-09 07:35:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 463. [2019-09-09 07:35:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-09-09 07:35:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 726 transitions. [2019-09-09 07:35:52,585 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 726 transitions. Word has length 162 [2019-09-09 07:35:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:35:52,586 INFO L475 AbstractCegarLoop]: Abstraction has 463 states and 726 transitions. [2019-09-09 07:35:52,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 07:35:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 726 transitions. [2019-09-09 07:35:52,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-09 07:35:52,593 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:35:52,595 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, 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 07:35:52,595 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:35:52,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:35:52,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1195424671, now seen corresponding path program 1 times [2019-09-09 07:35:52,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:35:52,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:52,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:35:52,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:52,598 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:35:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:35:52,897 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 07:35:52,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:35:52,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 07:35:52,898 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:35:52,900 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 07:35:52,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 07:35:52,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:35:52,901 INFO L87 Difference]: Start difference. First operand 463 states and 726 transitions. Second operand 3 states. [2019-09-09 07:35:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:35:54,086 INFO L93 Difference]: Finished difference Result 899 states and 1391 transitions. [2019-09-09 07:35:54,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 07:35:54,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-09-09 07:35:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:35:54,095 INFO L225 Difference]: With dead ends: 899 [2019-09-09 07:35:54,096 INFO L226 Difference]: Without dead ends: 899 [2019-09-09 07:35:54,097 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 07:35:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2019-09-09 07:35:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 884. [2019-09-09 07:35:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2019-09-09 07:35:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1361 transitions. [2019-09-09 07:35:54,137 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1361 transitions. Word has length 174 [2019-09-09 07:35:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:35:54,138 INFO L475 AbstractCegarLoop]: Abstraction has 884 states and 1361 transitions. [2019-09-09 07:35:54,138 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 07:35:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1361 transitions. [2019-09-09 07:35:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-09-09 07:35:54,143 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:35:54,143 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 07:35:54,144 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:35:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:35:54,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1007858302, now seen corresponding path program 1 times [2019-09-09 07:35:54,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:35:54,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:54,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:35:54,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:54,146 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:35:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:35:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:35:54,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:35:54,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 07:35:54,265 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:35:54,266 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 07:35:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 07:35:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 07:35:54,266 INFO L87 Difference]: Start difference. First operand 884 states and 1361 transitions. Second operand 6 states. [2019-09-09 07:35:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:35:55,962 INFO L93 Difference]: Finished difference Result 1809 states and 2977 transitions. [2019-09-09 07:35:55,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 07:35:55,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2019-09-09 07:35:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:35:55,980 INFO L225 Difference]: With dead ends: 1809 [2019-09-09 07:35:55,981 INFO L226 Difference]: Without dead ends: 1809 [2019-09-09 07:35:55,982 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 07:35:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2019-09-09 07:35:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1749. [2019-09-09 07:35:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2019-09-09 07:35:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2712 transitions. [2019-09-09 07:35:56,070 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2712 transitions. Word has length 179 [2019-09-09 07:35:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:35:56,078 INFO L475 AbstractCegarLoop]: Abstraction has 1749 states and 2712 transitions. [2019-09-09 07:35:56,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 07:35:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2712 transitions. [2019-09-09 07:35:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-09-09 07:35:56,087 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:35:56,087 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:35:56,087 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:35:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:35:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1478824810, now seen corresponding path program 1 times [2019-09-09 07:35:56,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:35:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:56,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:35:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:35:56,089 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:35:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:35:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:35:56,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 07:35:56,244 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 07:35:56,245 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2019-09-09 07:35:56,248 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [765], [767], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-09-09 07:35:56,314 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 07:35:56,315 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)