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/Problem13_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 17:03:46,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 17:03:46,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 17:03:46,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 17:03:46,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 17:03:46,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 17:03:46,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 17:03:46,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 17:03:46,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 17:03:46,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 17:03:46,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 17:03:46,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 17:03:46,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 17:03:46,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 17:03:46,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 17:03:46,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 17:03:46,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 17:03:46,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 17:03:46,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 17:03:46,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 17:03:46,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 17:03:46,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 17:03:46,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 17:03:46,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 17:03:46,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 17:03:46,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 17:03:46,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 17:03:46,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 17:03:46,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 17:03:46,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 17:03:46,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 17:03:46,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 17:03:46,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 17:03:46,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 17:03:46,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 17:03:46,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 17:03:46,731 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 17:03:46,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 17:03:46,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 17:03:46,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 17:03:46,746 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 17:03:46,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 17:03:46,747 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 17:03:46,747 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 17:03:46,748 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 17:03:46,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 17:03:46,748 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 17:03:46,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 17:03:46,749 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 17:03:46,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 17:03:46,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 17:03:46,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 17:03:46,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 17:03:46,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 17:03:46,750 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 17:03:46,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 17:03:46,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 17:03:46,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 17:03:46,751 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 17:03:46,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 17:03:46,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 17:03:46,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 17:03:46,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 17:03:46,752 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 17:03:46,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 17:03:46,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 17:03:46,753 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 17:03:46,780 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 17:03:46,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 17:03:46,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 17:03:46,797 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 17:03:46,798 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 17:03:46,798 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10.c [2019-09-09 17:03:46,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0dc6d4a/c3c732349a404109a2eb9b87b68738c2/FLAGdfe124675 [2019-09-09 17:03:47,692 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 17:03:47,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10.c [2019-09-09 17:03:47,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0dc6d4a/c3c732349a404109a2eb9b87b68738c2/FLAGdfe124675 [2019-09-09 17:03:48,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0dc6d4a/c3c732349a404109a2eb9b87b68738c2 [2019-09-09 17:03:48,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 17:03:48,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 17:03:48,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 17:03:48,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 17:03:48,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 17:03:48,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:03:48" (1/1) ... [2019-09-09 17:03:48,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e32827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:48, skipping insertion in model container [2019-09-09 17:03:48,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:03:48" (1/1) ... [2019-09-09 17:03:48,215 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 17:03:48,402 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 17:03:50,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:03:50,067 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 17:03:50,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:03:50,829 INFO L192 MainTranslator]: Completed translation [2019-09-09 17:03:50,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50 WrapperNode [2019-09-09 17:03:50,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 17:03:50,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 17:03:50,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 17:03:50,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 17:03:50,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (1/1) ... [2019-09-09 17:03:50,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (1/1) ... [2019-09-09 17:03:50,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (1/1) ... [2019-09-09 17:03:50,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (1/1) ... [2019-09-09 17:03:51,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (1/1) ... [2019-09-09 17:03:51,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (1/1) ... [2019-09-09 17:03:51,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (1/1) ... [2019-09-09 17:03:51,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 17:03:51,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 17:03:51,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 17:03:51,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 17:03:51,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (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 17:03:51,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 17:03:51,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 17:03:51,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 17:03:51,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 17:03:51,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 17:03:51,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 17:03:51,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 17:03:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 17:03:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 17:03:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 17:03:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 17:03:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 17:03:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 17:03:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 17:03:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 17:03:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 17:03:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 17:03:57,760 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 17:03:57,760 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 17:03:57,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:03:57 BoogieIcfgContainer [2019-09-09 17:03:57,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 17:03:57,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 17:03:57,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 17:03:57,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 17:03:57,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:03:48" (1/3) ... [2019-09-09 17:03:57,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b76dda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:03:57, skipping insertion in model container [2019-09-09 17:03:57,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:50" (2/3) ... [2019-09-09 17:03:57,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b76dda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:03:57, skipping insertion in model container [2019-09-09 17:03:57,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:03:57" (3/3) ... [2019-09-09 17:03:57,777 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label10.c [2019-09-09 17:03:57,790 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 17:03:57,800 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 17:03:57,817 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 17:03:57,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 17:03:57,847 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 17:03:57,847 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 17:03:57,847 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 17:03:57,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 17:03:57,847 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 17:03:57,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 17:03:57,848 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 17:03:57,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-09 17:03:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-09 17:03:57,909 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:03:57,911 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] [2019-09-09 17:03:57,912 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:03:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:03:57,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2146460016, now seen corresponding path program 1 times [2019-09-09 17:03:57,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:03:57,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:57,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:03:57,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:57,975 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:03:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:03:58,326 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 17:03:58,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:03:58,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 17:03:58,329 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:03:58,335 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 17:03:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 17:03:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 17:03:58,356 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-09 17:04:09,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:09,293 INFO L93 Difference]: Finished difference Result 2988 states and 5265 transitions. [2019-09-09 17:04:09,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 17:04:09,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-09-09 17:04:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:09,332 INFO L225 Difference]: With dead ends: 2988 [2019-09-09 17:04:09,332 INFO L226 Difference]: Without dead ends: 2901 [2019-09-09 17:04:09,334 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 17:04:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2019-09-09 17:04:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2771. [2019-09-09 17:04:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2771 states. [2019-09-09 17:04:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4860 transitions. [2019-09-09 17:04:09,515 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4860 transitions. Word has length 53 [2019-09-09 17:04:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:09,515 INFO L475 AbstractCegarLoop]: Abstraction has 2771 states and 4860 transitions. [2019-09-09 17:04:09,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 17:04:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4860 transitions. [2019-09-09 17:04:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-09 17:04:09,522 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:09,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:09,523 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:09,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1289536632, now seen corresponding path program 1 times [2019-09-09 17:04:09,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:09,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:09,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:09,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:09,525 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:09,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:04:09,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 17:04:09,875 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:09,877 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 17:04:09,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 17:04:09,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 17:04:09,878 INFO L87 Difference]: Start difference. First operand 2771 states and 4860 transitions. Second operand 6 states. [2019-09-09 17:04:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:18,478 INFO L93 Difference]: Finished difference Result 5346 states and 9271 transitions. [2019-09-09 17:04:18,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:04:18,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2019-09-09 17:04:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:18,512 INFO L225 Difference]: With dead ends: 5346 [2019-09-09 17:04:18,512 INFO L226 Difference]: Without dead ends: 5346 [2019-09-09 17:04:18,513 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 17:04:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2019-09-09 17:04:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 5286. [2019-09-09 17:04:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5286 states. [2019-09-09 17:04:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 9118 transitions. [2019-09-09 17:04:18,682 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 9118 transitions. Word has length 123 [2019-09-09 17:04:18,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:18,684 INFO L475 AbstractCegarLoop]: Abstraction has 5286 states and 9118 transitions. [2019-09-09 17:04:18,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 17:04:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 9118 transitions. [2019-09-09 17:04:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 17:04:18,694 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:18,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:18,695 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1281827183, now seen corresponding path program 1 times [2019-09-09 17:04:18,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:18,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:18,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:18,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:18,698 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:18,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:04:18,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 17:04:18,906 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:18,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 17:04:18,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 17:04:18,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 17:04:18,908 INFO L87 Difference]: Start difference. First operand 5286 states and 9118 transitions. Second operand 6 states. [2019-09-09 17:04:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:27,121 INFO L93 Difference]: Finished difference Result 7919 states and 13114 transitions. [2019-09-09 17:04:27,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:04:27,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-09-09 17:04:27,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:27,159 INFO L225 Difference]: With dead ends: 7919 [2019-09-09 17:04:27,159 INFO L226 Difference]: Without dead ends: 7919 [2019-09-09 17:04:27,169 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 17:04:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7919 states. [2019-09-09 17:04:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7919 to 7853. [2019-09-09 17:04:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7853 states. [2019-09-09 17:04:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 12898 transitions. [2019-09-09 17:04:27,374 INFO L78 Accepts]: Start accepts. Automaton has 7853 states and 12898 transitions. Word has length 126 [2019-09-09 17:04:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:27,376 INFO L475 AbstractCegarLoop]: Abstraction has 7853 states and 12898 transitions. [2019-09-09 17:04:27,376 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 17:04:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7853 states and 12898 transitions. [2019-09-09 17:04:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-09-09 17:04:27,380 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:27,381 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-09 17:04:27,381 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:27,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1171430211, now seen corresponding path program 1 times [2019-09-09 17:04:27,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:27,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:27,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:27,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:27,383 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 17:04:27,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 17:04:27,565 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 17:04:27,566 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2019-09-09 17:04:27,568 INFO L207 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2959], [2961], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3124], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4251], [4255], [4257], [4268], [4269], [4270], [4272], [4273] [2019-09-09 17:04:27,613 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 17:04:27,614 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 17:05:02,266 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 17:05:02,268 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Performed 136 root evaluator evaluations with a maximum evaluation depth of 17. Performed 136 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 17:05:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:05:02,273 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 17:05:36,430 INFO L227 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 71.35% of their original sizes. [2019-09-09 17:05:36,431 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 17:05:36,475 INFO L420 sIntCurrentIteration]: We unified 212 AI predicates to 212 [2019-09-09 17:05:36,476 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 17:05:36,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 17:05:36,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-09-09 17:05:36,477 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:05:36,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-09 17:05:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-09 17:05:36,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-09 17:05:36,479 INFO L87 Difference]: Start difference. First operand 7853 states and 12898 transitions. Second operand 7 states. [2019-09-09 17:07:34,484 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.