java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem01_label35_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:15:01,058 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:15:01,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:15:01,073 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:15:01,073 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:15:01,075 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:15:01,076 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:15:01,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:15:01,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:15:01,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:15:01,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:15:01,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:15:01,083 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:15:01,084 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:15:01,085 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:15:01,086 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:15:01,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:15:01,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:15:01,091 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:15:01,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:15:01,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:15:01,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:15:01,098 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:15:01,109 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 17:15:01,126 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:15:01,130 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:15:01,131 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:15:01,131 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:15:01,132 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:15:01,132 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:15:01,132 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:15:01,134 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:15:01,134 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:15:01,134 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:15:01,135 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:15:01,135 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:15:01,136 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:15:01,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:15:01,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:15:01,137 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:15:01,137 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:15:01,137 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:15:01,138 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:15:01,138 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:15:01,138 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:15:01,138 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:15:01,138 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:15:01,139 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:15:01,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:15:01,140 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:15:01,140 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:15:01,140 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:15:01,140 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:15:01,141 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:15:01,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:15:01,141 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:15:01,141 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:15:01,141 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:15:01,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:15:01,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:15:01,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:15:01,232 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:15:01,233 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:15:01,234 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35_false-unreach-call_false-termination.c [2018-10-24 17:15:01,296 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eaf22683c/85c61a33c34b44619ce8b2a30062a41a/FLAG81ec44437 [2018-10-24 17:15:01,933 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:15:01,934 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label35_false-unreach-call_false-termination.c [2018-10-24 17:15:01,949 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eaf22683c/85c61a33c34b44619ce8b2a30062a41a/FLAG81ec44437 [2018-10-24 17:15:01,965 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eaf22683c/85c61a33c34b44619ce8b2a30062a41a [2018-10-24 17:15:01,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:15:01,979 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:15:01,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:01,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:15:01,985 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:15:01,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:01" (1/1) ... [2018-10-24 17:15:01,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:01, skipping insertion in model container [2018-10-24 17:15:01,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:01" (1/1) ... [2018-10-24 17:15:01,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:15:02,053 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:15:02,535 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,540 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:15:02,669 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,687 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:15:02,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02 WrapperNode [2018-10-24 17:15:02,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:15:02,689 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:15:02,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:15:02,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:15:02,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:15:02,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:15:02,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:15:02,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:15:02,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:15:02,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 17:15:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:15:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:15:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:15:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:15:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:15:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:15:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:15:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:15:06,155 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:15:06,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06 BoogieIcfgContainer [2018-10-24 17:15:06,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:15:06,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:15:06,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:15:06,167 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:15:06,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:15:01" (1/3) ... [2018-10-24 17:15:06,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee7efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (2/3) ... [2018-10-24 17:15:06,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee7efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06" (3/3) ... [2018-10-24 17:15:06,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label35_false-unreach-call_false-termination.c [2018-10-24 17:15:06,183 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:15:06,193 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:15:06,212 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:15:06,251 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:15:06,251 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:15:06,252 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:15:06,252 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:15:06,252 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:15:06,252 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:15:06,252 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:15:06,253 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:15:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 17:15:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-24 17:15:06,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:06,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:06,294 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:06,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:06,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1445496115, now seen corresponding path program 1 times [2018-10-24 17:15:06,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:06,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:06,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:07,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:07,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:07,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:07,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:07,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:07,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:07,033 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 17:15:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:08,635 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 17:15:08,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:08,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2018-10-24 17:15:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:08,662 INFO L225 Difference]: With dead ends: 550 [2018-10-24 17:15:08,663 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 17:15:08,675 INFO L605 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 [2018-10-24 17:15:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 17:15:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 17:15:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 17:15:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-10-24 17:15:08,763 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 87 [2018-10-24 17:15:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:08,764 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-10-24 17:15:08,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-10-24 17:15:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 17:15:08,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:08,771 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:08,771 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:08,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:08,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1615708658, now seen corresponding path program 1 times [2018-10-24 17:15:08,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:08,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:08,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:08,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:08,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:08,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:08,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:08,950 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:08,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:08,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:08,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:08,953 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-10-24 17:15:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:10,871 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-10-24 17:15:10,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:10,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-24 17:15:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:10,879 INFO L225 Difference]: With dead ends: 888 [2018-10-24 17:15:10,879 INFO L226 Difference]: Without dead ends: 554 [2018-10-24 17:15:10,883 INFO L605 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 [2018-10-24 17:15:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-10-24 17:15:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-10-24 17:15:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-10-24 17:15:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-10-24 17:15:10,927 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 98 [2018-10-24 17:15:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:10,927 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-10-24 17:15:10,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-10-24 17:15:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 17:15:10,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:10,933 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:10,934 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:10,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:10,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1047112390, now seen corresponding path program 1 times [2018-10-24 17:15:10,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:10,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:10,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:10,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:10,936 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:11,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:11,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:11,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:11,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:11,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:11,218 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 3 states. [2018-10-24 17:15:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:12,705 INFO L93 Difference]: Finished difference Result 1530 states and 2434 transitions. [2018-10-24 17:15:12,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:12,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2018-10-24 17:15:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:12,718 INFO L225 Difference]: With dead ends: 1530 [2018-10-24 17:15:12,719 INFO L226 Difference]: Without dead ends: 997 [2018-10-24 17:15:12,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:12,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2018-10-24 17:15:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 994. [2018-10-24 17:15:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 994 states. [2018-10-24 17:15:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1454 transitions. [2018-10-24 17:15:12,796 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1454 transitions. Word has length 99 [2018-10-24 17:15:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:12,797 INFO L481 AbstractCegarLoop]: Abstraction has 994 states and 1454 transitions. [2018-10-24 17:15:12,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1454 transitions. [2018-10-24 17:15:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 17:15:12,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:12,805 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:15:12,805 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:12,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:12,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1142498926, now seen corresponding path program 1 times [2018-10-24 17:15:12,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:12,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:12,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:12,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:12,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:13,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:13,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 17:15:13,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:13,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:15:13,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:15:13,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:15:13,269 INFO L87 Difference]: Start difference. First operand 994 states and 1454 transitions. Second operand 7 states. [2018-10-24 17:15:13,552 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 17:15:17,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:17,190 INFO L93 Difference]: Finished difference Result 2916 states and 4395 transitions. [2018-10-24 17:15:17,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 17:15:17,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2018-10-24 17:15:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:17,209 INFO L225 Difference]: With dead ends: 2916 [2018-10-24 17:15:17,209 INFO L226 Difference]: Without dead ends: 1928 [2018-10-24 17:15:17,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 17:15:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-10-24 17:15:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1878. [2018-10-24 17:15:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2018-10-24 17:15:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2597 transitions. [2018-10-24 17:15:17,308 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2597 transitions. Word has length 100 [2018-10-24 17:15:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:17,308 INFO L481 AbstractCegarLoop]: Abstraction has 1878 states and 2597 transitions. [2018-10-24 17:15:17,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:15:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2597 transitions. [2018-10-24 17:15:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 17:15:17,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:17,314 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-10-24 17:15:17,314 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:17,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:17,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1896825545, now seen corresponding path program 1 times [2018-10-24 17:15:17,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:17,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:17,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 17:15:17,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:17,526 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:17,527 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 111 with the following transitions: [2018-10-24 17:15:17,529 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [18], [21], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 17:15:17,603 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:17,604 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:15:28,167 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:15:28,170 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-24 17:15:28,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:28,224 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:15:31,390 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 79.78% of their original sizes. [2018-10-24 17:15:31,391 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:15:32,706 INFO L413 sIntCurrentIteration]: We have 109 unified AI predicates [2018-10-24 17:15:32,706 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:15:32,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:15:32,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2018-10-24 17:15:32,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:32,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 17:15:32,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 17:15:32,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 17:15:32,709 INFO L87 Difference]: Start difference. First operand 1878 states and 2597 transitions. Second operand 12 states. [2018-10-24 17:15:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:51,943 INFO L93 Difference]: Finished difference Result 3811 states and 5279 transitions. [2018-10-24 17:15:51,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 17:15:51,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 110 [2018-10-24 17:15:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:51,954 INFO L225 Difference]: With dead ends: 3811 [2018-10-24 17:15:51,954 INFO L226 Difference]: Without dead ends: 1939 [2018-10-24 17:15:51,960 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-24 17:15:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2018-10-24 17:15:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1939. [2018-10-24 17:15:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2018-10-24 17:15:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2667 transitions. [2018-10-24 17:15:52,018 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2667 transitions. Word has length 110 [2018-10-24 17:15:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:52,018 INFO L481 AbstractCegarLoop]: Abstraction has 1939 states and 2667 transitions. [2018-10-24 17:15:52,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 17:15:52,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2667 transitions. [2018-10-24 17:15:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 17:15:52,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:52,023 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 17:15:52,023 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:52,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:52,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1308026811, now seen corresponding path program 1 times [2018-10-24 17:15:52,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:52,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:52,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:52,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:52,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:52,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:52,219 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:52,219 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2018-10-24 17:15:52,220 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [21], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 17:15:52,225 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:52,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:16:22,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:16:22,542 INFO L272 AbstractInterpreter]: Visited 91 different actions 156 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 17:16:22,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:16:22,577 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:16:26,353 INFO L232 lantSequenceWeakener]: Weakened 85 states. On average, predicates are now at 80.49% of their original sizes. [2018-10-24 17:16:26,353 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:17:02,772 INFO L413 sIntCurrentIteration]: We have 111 unified AI predicates [2018-10-24 17:17:02,772 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:17:02,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:17:02,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-24 17:17:02,772 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:17:02,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 17:17:02,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 17:17:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2018-10-24 17:17:02,774 INFO L87 Difference]: Start difference. First operand 1939 states and 2667 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 17:19:17,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 17:19:17,618 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:19:17,624 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:19:17,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:19:17 BoogieIcfgContainer [2018-10-24 17:19:17,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:19:17,626 INFO L168 Benchmark]: Toolchain (without parser) took 255648.06 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 596.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:17,627 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:17,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:17,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 197.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:17,630 INFO L168 Benchmark]: Boogie Preprocessor took 82.17 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:17,630 INFO L168 Benchmark]: RCFGBuilder took 3191.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:17,631 INFO L168 Benchmark]: TraceAbstraction took 251462.57 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -694.0 MB). Peak memory consumption was 511.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:17,636 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 197.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.17 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3191.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251462.57 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -694.0 MB). Peak memory consumption was 511.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 416]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 416). Cancelled while BasicCegarLoop was constructing difference of abstraction (1939states) and FLOYD_HOARE automaton (currently 23 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (104 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 251.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 163.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 905 SDtfs, 2012 SDslu, 791 SDs, 0 SdLazy, 3892 SolverSat, 681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 274 GetRequests, 198 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 72.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1939occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 41.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9923925667828107 AbsIntWeakeningRatio, 0.3181818181818182 AbsIntAvgWeakeningVarsNumRemoved, 1496.5136363636364 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 68 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 606 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 600 ConstructedInterpolants, 0 QuantifiedInterpolants, 135752 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 78/85 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown