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_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:55:57,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:55:57,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:55:57,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:55:57,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:55:57,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:55:57,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:55:57,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:55:57,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:55:57,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:55:57,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:55:57,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:55:57,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:55:57,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:55:57,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:55:57,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:55:57,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:55:57,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:55:57,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:55:57,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:55:57,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:55:57,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:55:57,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:55:57,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:55:57,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 05:55:57,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 05:55:57,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 05:55:57,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 05:55:57,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 05:55:57,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 05:55:57,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:55:57,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:55:57,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:55:57,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:55:57,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:55:57,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:55:57,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:55:57,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:55:57,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:55:57,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:55:57,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:55:57,976 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 05:55:57,993 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:55:57,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:55:57,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:55:57,994 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:55:57,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:55:57,995 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:55:57,996 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:55:57,996 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:55:57,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:55:57,997 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:55:57,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:55:57,999 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:55:57,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:55:58,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:55:58,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:55:58,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:55:58,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:55:58,000 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:55:58,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:55:58,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:55:58,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:55:58,001 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:55:58,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:55:58,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:55:58,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:55:58,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:55:58,003 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:55:58,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:55:58,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:55:58,003 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:55:58,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:55:58,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:55:58,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:55:58,070 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:55:58,071 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:55:58,071 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label12.c [2019-09-09 05:55:58,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c809b4b/588fbcbb417649f69c8975006d907398/FLAGec7be3259 [2019-09-09 05:55:58,649 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:55:58,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label12.c [2019-09-09 05:55:58,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c809b4b/588fbcbb417649f69c8975006d907398/FLAGec7be3259 [2019-09-09 05:55:58,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c809b4b/588fbcbb417649f69c8975006d907398 [2019-09-09 05:55:58,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:55:58,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:55:58,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:55:58,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:55:58,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:55:58,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:55:58" (1/1) ... [2019-09-09 05:55:58,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61dde08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:58, skipping insertion in model container [2019-09-09 05:55:58,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:55:58" (1/1) ... [2019-09-09 05:55:58,929 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:55:58,984 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:55:59,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:55:59,580 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:55:59,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:55:59,740 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:55:59,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59 WrapperNode [2019-09-09 05:55:59,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:55:59,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:55:59,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:55:59,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:55:59,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (1/1) ... [2019-09-09 05:55:59,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (1/1) ... [2019-09-09 05:55:59,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (1/1) ... [2019-09-09 05:55:59,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (1/1) ... [2019-09-09 05:55:59,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (1/1) ... [2019-09-09 05:55:59,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (1/1) ... [2019-09-09 05:55:59,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (1/1) ... [2019-09-09 05:55:59,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:55:59,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:55:59,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:55:59,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:55:59,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (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 05:55:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:55:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:55:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 05:55:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:55:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 05:55:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:55:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:55:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 05:55:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:55:59,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:55:59,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:56:01,032 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:56:01,032 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 05:56:01,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:56:01 BoogieIcfgContainer [2019-09-09 05:56:01,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:56:01,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:56:01,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:56:01,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:56:01,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:55:58" (1/3) ... [2019-09-09 05:56:01,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a617c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:56:01, skipping insertion in model container [2019-09-09 05:56:01,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:59" (2/3) ... [2019-09-09 05:56:01,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a617c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:56:01, skipping insertion in model container [2019-09-09 05:56:01,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:56:01" (3/3) ... [2019-09-09 05:56:01,055 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label12.c [2019-09-09 05:56:01,070 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:56:01,080 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:56:01,097 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:56:01,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:56:01,127 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:56:01,127 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:56:01,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:56:01,128 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:56:01,128 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:56:01,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:56:01,128 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:56:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 05:56:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 05:56:01,187 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:56:01,189 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] [2019-09-09 05:56:01,191 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:56:01,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:56:01,198 INFO L82 PathProgramCache]: Analyzing trace with hash 857451654, now seen corresponding path program 1 times [2019-09-09 05:56:01,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:56:01,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:56:01,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:56:01,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:56:01,254 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:56:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:56:01,707 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 05:56:01,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:56:01,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:56:01,710 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:56:01,716 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:56:01,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:56:01,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:56:01,734 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 05:56:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:56:02,640 INFO L93 Difference]: Finished difference Result 346 states and 517 transitions. [2019-09-09 05:56:02,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:56:02,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-09-09 05:56:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:56:02,666 INFO L225 Difference]: With dead ends: 346 [2019-09-09 05:56:02,667 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 05:56:02,669 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 05:56:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 05:56:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 05:56:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 05:56:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2019-09-09 05:56:02,775 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 126 [2019-09-09 05:56:02,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:56:02,776 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2019-09-09 05:56:02,776 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:56:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2019-09-09 05:56:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-09 05:56:02,780 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:56:02,782 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] [2019-09-09 05:56:02,782 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:56:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:56:02,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1224530899, now seen corresponding path program 1 times [2019-09-09 05:56:02,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:56:02,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:56:02,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:56:02,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:56:02,788 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:56:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:56:02,987 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 05:56:02,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:56:02,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 05:56:02,988 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:56:02,990 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:56:02,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:56:02,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:56:02,990 INFO L87 Difference]: Start difference. First operand 278 states and 412 transitions. Second operand 4 states. [2019-09-09 05:56:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:56:04,030 INFO L93 Difference]: Finished difference Result 683 states and 955 transitions. [2019-09-09 05:56:04,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:56:04,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-09-09 05:56:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:56:04,040 INFO L225 Difference]: With dead ends: 683 [2019-09-09 05:56:04,040 INFO L226 Difference]: Without dead ends: 683 [2019-09-09 05:56:04,041 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 05:56:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2019-09-09 05:56:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 548. [2019-09-09 05:56:04,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2019-09-09 05:56:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 776 transitions. [2019-09-09 05:56:04,068 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 776 transitions. Word has length 143 [2019-09-09 05:56:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:56:04,069 INFO L475 AbstractCegarLoop]: Abstraction has 548 states and 776 transitions. [2019-09-09 05:56:04,069 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:56:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 776 transitions. [2019-09-09 05:56:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-09-09 05:56:04,073 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:56:04,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:56:04,074 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:56:04,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:56:04,074 INFO L82 PathProgramCache]: Analyzing trace with hash -20511571, now seen corresponding path program 1 times [2019-09-09 05:56:04,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:56:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:56:04,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:56:04,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:56:04,076 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:56:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:56:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:56:04,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:56:04,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:56:04,308 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:56:04,310 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:56:04,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:56:04,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:56:04,311 INFO L87 Difference]: Start difference. First operand 548 states and 776 transitions. Second operand 3 states. [2019-09-09 05:56:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:56:04,832 INFO L93 Difference]: Finished difference Result 951 states and 1299 transitions. [2019-09-09 05:56:04,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:56:04,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-09-09 05:56:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:56:04,835 INFO L225 Difference]: With dead ends: 951 [2019-09-09 05:56:04,835 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:56:04,836 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 05:56:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:56:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:56:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:56:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:56:04,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2019-09-09 05:56:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:56:04,838 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:56:04,839 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:56:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:56:04,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:56:04,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:56:04 BoogieIcfgContainer [2019-09-09 05:56:04,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:56:04,847 INFO L168 Benchmark]: Toolchain (without parser) took 5933.27 ms. Allocated memory was 132.6 MB in the beginning and 327.7 MB in the end (delta: 195.0 MB). Free memory was 87.1 MB in the beginning and 196.4 MB in the end (delta: -109.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:56:04,848 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:56:04,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.19 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 86.9 MB in the beginning and 164.9 MB in the end (delta: -78.0 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:56:04,850 INFO L168 Benchmark]: Boogie Preprocessor took 106.99 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 159.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:56:04,851 INFO L168 Benchmark]: RCFGBuilder took 1185.88 ms. Allocated memory was 200.8 MB in the beginning and 224.9 MB in the end (delta: 24.1 MB). Free memory was 159.5 MB in the beginning and 176.9 MB in the end (delta: -17.5 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:56:04,852 INFO L168 Benchmark]: TraceAbstraction took 3806.57 ms. Allocated memory was 224.9 MB in the beginning and 327.7 MB in the end (delta: 102.8 MB). Free memory was 176.9 MB in the beginning and 196.4 MB in the end (delta: -19.4 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:56:04,856 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 827.19 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 86.9 MB in the beginning and 164.9 MB in the end (delta: -78.0 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.99 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 159.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1185.88 ms. Allocated memory was 200.8 MB in the beginning and 224.9 MB in the end (delta: 24.1 MB). Free memory was 159.5 MB in the beginning and 176.9 MB in the end (delta: -17.5 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3806.57 ms. Allocated memory was 224.9 MB in the beginning and 327.7 MB in the end (delta: 102.8 MB). Free memory was 176.9 MB in the beginning and 196.4 MB in the end (delta: -19.4 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 536]: 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, 3.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 491 SDtfs, 253 SDslu, 67 SDs, 0 SdLazy, 1571 SolverSat, 278 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=548occurred in iteration=2, 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 135 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 216225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 45/45 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...