java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:32:16,918 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:32:16,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:32:16,939 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:32:16,939 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:32:16,941 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:32:16,942 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:32:16,945 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:32:16,946 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:32:16,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:32:16,949 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:32:16,952 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:32:16,953 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:32:16,954 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:32:16,957 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:32:16,958 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:32:16,959 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:32:16,969 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:32:16,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:32:16,975 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:32:16,979 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:32:16,980 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:32:16,984 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:32:16,995 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:32:16,995 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:32:16,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:32:16,998 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:32:16,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:32:17,028 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:32:17,028 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:32:17,029 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:32:17,029 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:32:17,029 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:32:17,029 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:32:17,030 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:32:17,030 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:32:17,030 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:32:17,030 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:32:17,030 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:32:17,031 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:32:17,031 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:32:17,031 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:32:17,032 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:32:17,032 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:32:17,032 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:32:17,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:32:17,032 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:32:17,034 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:32:17,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:32:17,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:32:17,034 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:32:17,034 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:32:17,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:32:17,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:32:17,035 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:32:17,035 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:32:17,035 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:32:17,036 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:32:17,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:32:17,036 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:32:17,036 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:32:17,036 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:32:17,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:32:17,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:32:17,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:32:17,114 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:32:17,114 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:32:17,115 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-11-07 00:32:17,172 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d27ec2e/50eb2e7ce9344430a71cf83dac42a6a7/FLAGd3177595c [2018-11-07 00:32:17,910 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:32:17,911 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-11-07 00:32:17,928 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d27ec2e/50eb2e7ce9344430a71cf83dac42a6a7/FLAGd3177595c [2018-11-07 00:32:17,943 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d27ec2e/50eb2e7ce9344430a71cf83dac42a6a7 [2018-11-07 00:32:17,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:32:17,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:32:17,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:32:17,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:32:17,961 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:32:17,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:17" (1/1) ... [2018-11-07 00:32:17,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:17, skipping insertion in model container [2018-11-07 00:32:17,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:17" (1/1) ... [2018-11-07 00:32:17,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:32:18,062 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:32:18,779 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:32:18,783 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:32:19,033 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:32:19,056 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:32:19,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19 WrapperNode [2018-11-07 00:32:19,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:32:19,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:32:19,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:32:19,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:32:19,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:32:19,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:32:19,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:32:19,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:32:19,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (1/1) ... [2018-11-07 00:32:19,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:32:19,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:32:19,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:32:19,446 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:32:19,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (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 [2018-11-07 00:32:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:32:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:32:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:32:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:32:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:32:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:32:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:32:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:32:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:32:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:32:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:32:25,093 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:32:25,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:25 BoogieIcfgContainer [2018-11-07 00:32:25,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:32:25,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:32:25,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:32:25,099 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:32:25,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:32:17" (1/3) ... [2018-11-07 00:32:25,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:25, skipping insertion in model container [2018-11-07 00:32:25,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:19" (2/3) ... [2018-11-07 00:32:25,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:25, skipping insertion in model container [2018-11-07 00:32:25,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:25" (3/3) ... [2018-11-07 00:32:25,103 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label14_false-unreach-call.c [2018-11-07 00:32:25,113 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:32:25,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:32:25,142 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:32:25,184 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:32:25,185 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:32:25,185 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:32:25,185 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:32:25,185 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:32:25,185 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:32:25,186 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:32:25,186 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:32:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 00:32:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-07 00:32:25,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:32:25,231 INFO L375 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] [2018-11-07 00:32:25,234 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:32:25,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:32:25,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1095563467, now seen corresponding path program 1 times [2018-11-07 00:32:25,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:32:25,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:25,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:32:25,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:25,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:32:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:32:25,600 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:32:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:32:25,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:32:25,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:32:25,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:32:25,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:32:25,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:32:25,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:32:25,743 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 00:32:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:32:29,774 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 00:32:29,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:32:29,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-07 00:32:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:32:29,801 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 00:32:29,801 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 00:32:29,810 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:32:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 00:32:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 00:32:29,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 00:32:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 00:32:29,929 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 25 [2018-11-07 00:32:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:32:29,929 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 00:32:29,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:32:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 00:32:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-07 00:32:29,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:32:29,937 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:32:29,937 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:32:29,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:32:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash -826057540, now seen corresponding path program 1 times [2018-11-07 00:32:29,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:32:29,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:29,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:32:29,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:29,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:32:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:32:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:32:30,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:32:30,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:32:30,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:32:30,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:32:30,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:32:30,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:32:30,220 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 00:32:36,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:32:36,413 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-11-07 00:32:36,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:32:36,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-11-07 00:32:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:32:36,427 INFO L225 Difference]: With dead ends: 2194 [2018-11-07 00:32:36,428 INFO L226 Difference]: Without dead ends: 1456 [2018-11-07 00:32:36,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:32:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-07 00:32:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-11-07 00:32:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 00:32:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-11-07 00:32:36,511 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 95 [2018-11-07 00:32:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:32:36,512 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-11-07 00:32:36,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:32:36,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-11-07 00:32:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 00:32:36,517 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:32:36,517 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:32:36,518 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:32:36,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:32:36,518 INFO L82 PathProgramCache]: Analyzing trace with hash -298596995, now seen corresponding path program 1 times [2018-11-07 00:32:36,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:32:36,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:36,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:32:36,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:36,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:32:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:32:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:32:36,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:32:36,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:32:36,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:32:36,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:32:36,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:32:36,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:32:36,808 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-11-07 00:32:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:32:41,360 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-11-07 00:32:41,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:32:41,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-11-07 00:32:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:32:41,435 INFO L225 Difference]: With dead ends: 3936 [2018-11-07 00:32:41,435 INFO L226 Difference]: Without dead ends: 2506 [2018-11-07 00:32:41,445 INFO L604 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 [2018-11-07 00:32:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-11-07 00:32:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-11-07 00:32:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-11-07 00:32:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-11-07 00:32:41,527 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 124 [2018-11-07 00:32:41,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:32:41,528 INFO L480 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-11-07 00:32:41,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:32:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-11-07 00:32:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 00:32:41,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:32:41,533 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:32:41,533 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:32:41,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:32:41,534 INFO L82 PathProgramCache]: Analyzing trace with hash 113309953, now seen corresponding path program 1 times [2018-11-07 00:32:41,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:32:41,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:41,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:32:41,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:41,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:32:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:32:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:32:41,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:32:41,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:32:41,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:32:41,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:32:41,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:32:41,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:32:41,803 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-11-07 00:32:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:32:44,768 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-11-07 00:32:44,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:32:44,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 00:32:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:32:44,792 INFO L225 Difference]: With dead ends: 6050 [2018-11-07 00:32:44,792 INFO L226 Difference]: Without dead ends: 3577 [2018-11-07 00:32:44,803 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:32:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-11-07 00:32:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-11-07 00:32:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-11-07 00:32:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-11-07 00:32:44,905 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 142 [2018-11-07 00:32:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:32:44,906 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-11-07 00:32:44,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:32:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-11-07 00:32:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 00:32:44,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:32:44,910 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 00:32:44,911 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:32:44,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:32:44,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1758923227, now seen corresponding path program 1 times [2018-11-07 00:32:44,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:32:44,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:44,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:32:44,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:32:44,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:32:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:32:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 85 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:32:45,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:32:45,197 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:32:45,198 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 00:32:45,200 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 00:32:45,275 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:32:45,275 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:32:48,273 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:32:48,275 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:32:48,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:32:48,297 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:32:50,103 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 77.51% of their original sizes. [2018-11-07 00:32:50,103 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:32:50,701 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 00:32:50,702 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:32:50,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:32:50,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 00:32:50,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:32:50,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 00:32:50,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 00:32:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:32:50,704 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-11-07 00:32:55,041 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:33:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:33:44,049 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-11-07 00:33:44,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:33:44,050 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2018-11-07 00:33:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:33:44,068 INFO L225 Difference]: With dead ends: 7424 [2018-11-07 00:33:44,068 INFO L226 Difference]: Without dead ends: 3885 [2018-11-07 00:33:44,080 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:33:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-11-07 00:33:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-11-07 00:33:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-11-07 00:33:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-11-07 00:33:44,175 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 225 [2018-11-07 00:33:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:33:44,176 INFO L480 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-11-07 00:33:44,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 00:33:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-11-07 00:33:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-07 00:33:44,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:33:44,182 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:33:44,183 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:33:44,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:33:44,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1713198942, now seen corresponding path program 1 times [2018-11-07 00:33:44,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:33:44,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:44,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:33:44,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:44,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:33:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:33:44,497 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 00:33:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 126 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 00:33:44,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:33:44,628 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:33:44,628 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-11-07 00:33:44,628 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 00:33:44,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:33:44,637 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:33:45,802 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:33:56,153 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:33:56,153 INFO L272 AbstractInterpreter]: Visited 139 different actions 408 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:33:56,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:33:56,157 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:33:59,257 INFO L227 lantSequenceWeakener]: Weakened 59 states. On average, predicates are now at 78.85% of their original sizes. [2018-11-07 00:33:59,257 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:35:05,700 INFO L415 sIntCurrentIteration]: We unified 316 AI predicates to 316 [2018-11-07 00:35:05,701 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:35:05,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:35:05,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [7] total 28 [2018-11-07 00:35:05,702 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:35:05,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 00:35:05,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 00:35:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-11-07 00:35:05,704 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 23 states. Received shutdown request... [2018-11-07 00:36:20,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 00:36:20,838 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:36:20,844 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:36:20,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:20 BoogieIcfgContainer [2018-11-07 00:36:20,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:36:20,845 INFO L168 Benchmark]: Toolchain (without parser) took 242890.77 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -495.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 00:36:20,846 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:36:20,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1100.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:36:20,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 219.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -834.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:36:20,849 INFO L168 Benchmark]: Boogie Preprocessor took 165.11 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:36:20,849 INFO L168 Benchmark]: RCFGBuilder took 5648.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 252.2 MB). Peak memory consumption was 252.2 MB. Max. memory is 7.1 GB. [2018-11-07 00:36:20,850 INFO L168 Benchmark]: TraceAbstraction took 235749.49 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 3.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:36:20,855 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1100.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 219.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -834.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.11 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5648.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 252.2 MB). Peak memory consumption was 252.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235749.49 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 3.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 16 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (321 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 235.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 146.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 828 SDtfs, 6900 SDslu, 745 SDs, 0 SdLazy, 9795 SolverSat, 2416 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 585 GetRequests, 446 SyntacticMatches, 80 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 70.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9954743692968331 AbsIntWeakeningRatio, 0.10740740740740741 AbsIntAvgWeakeningVarsNumRemoved, 559.3425925925926 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 928 NumberOfCodeBlocks, 928 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 922 ConstructedInterpolants, 0 QuantifiedInterpolants, 778761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 315/446 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown