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/Problem16_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:41:33,024 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:41:33,026 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:41:33,037 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:41:33,038 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:41:33,039 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:41:33,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:41:33,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:41:33,044 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:41:33,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:41:33,049 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:41:33,049 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:41:33,050 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:41:33,052 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:41:33,053 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:41:33,054 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:41:33,055 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:41:33,057 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:41:33,061 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:41:33,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:41:33,066 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:41:33,069 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:41:33,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:41:33,083 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 [2018-10-23 22:41:33,107 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:41:33,108 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:41:33,108 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:41:33,109 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:41:33,110 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:41:33,110 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:41:33,110 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:41:33,111 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:41:33,111 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:41:33,111 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:41:33,111 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:41:33,111 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:41:33,113 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:41:33,113 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:41:33,113 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:41:33,113 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:41:33,114 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:41:33,115 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:41:33,116 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:41:33,116 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:41:33,116 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:41:33,116 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:41:33,116 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:41:33,117 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:41:33,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:41:33,117 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:41:33,117 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:41:33,117 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:41:33,118 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:41:33,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:41:33,118 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:41:33,118 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:41:33,118 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:41:33,119 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:41:33,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:41:33,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:41:33,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:41:33,186 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:41:33,187 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:41:33,188 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label20_false-unreach-call.c [2018-10-23 22:41:33,248 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/345ab4803/f7097e388b3347ccbd9a762a564bf4ed/FLAG588e09ba7 [2018-10-23 22:41:33,921 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:41:33,921 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label20_false-unreach-call.c [2018-10-23 22:41:33,955 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/345ab4803/f7097e388b3347ccbd9a762a564bf4ed/FLAG588e09ba7 [2018-10-23 22:41:33,976 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/345ab4803/f7097e388b3347ccbd9a762a564bf4ed [2018-10-23 22:41:33,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:41:33,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:41:33,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:41:33,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:41:33,997 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:41:33,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:41:33" (1/1) ... [2018-10-23 22:41:34,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3745e474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:33, skipping insertion in model container [2018-10-23 22:41:34,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:41:33" (1/1) ... [2018-10-23 22:41:34,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:41:34,116 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:41:34,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:41:34,851 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:41:35,099 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:41:35,119 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:41:35,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35 WrapperNode [2018-10-23 22:41:35,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:41:35,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:41:35,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:41:35,122 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:41:35,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:41:35,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:41:35,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:41:35,419 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:41:35,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (1/1) ... [2018-10-23 22:41:35,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:41:35,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:41:35,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:41:35,622 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:41:35,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (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 [2018-10-23 22:41:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:41:35,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:41:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:41:35,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:41:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:41:35,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:41:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:41:35,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:41:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:41:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:41:42,086 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:41:42,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:41:42 BoogieIcfgContainer [2018-10-23 22:41:42,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:41:42,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:41:42,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:41:42,094 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:41:42,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:41:33" (1/3) ... [2018-10-23 22:41:42,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac83c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:41:42, skipping insertion in model container [2018-10-23 22:41:42,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:35" (2/3) ... [2018-10-23 22:41:42,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac83c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:41:42, skipping insertion in model container [2018-10-23 22:41:42,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:41:42" (3/3) ... [2018-10-23 22:41:42,098 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label20_false-unreach-call.c [2018-10-23 22:41:42,109 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:41:42,122 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:41:42,143 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:41:42,195 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:41:42,195 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:41:42,196 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:41:42,196 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:41:42,196 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:41:42,196 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:41:42,196 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:41:42,196 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:41:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-23 22:41:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-23 22:41:42,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:42,238 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] [2018-10-23 22:41:42,240 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:42,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:42,247 INFO L82 PathProgramCache]: Analyzing trace with hash -730185661, now seen corresponding path program 1 times [2018-10-23 22:41:42,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:42,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:42,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:42,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:42,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:42,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:42,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:41:42,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:42,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:41:42,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:41:42,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:41:42,745 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-23 22:41:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:46,503 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-23 22:41:46,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:41:46,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-23 22:41:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:46,542 INFO L225 Difference]: With dead ends: 1156 [2018-10-23 22:41:46,544 INFO L226 Difference]: Without dead ends: 744 [2018-10-23 22:41:46,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:41:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-23 22:41:46,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-23 22:41:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-23 22:41:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-23 22:41:46,662 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 31 [2018-10-23 22:41:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:46,662 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-23 22:41:46,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:41:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-23 22:41:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 22:41:46,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:46,671 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:46,672 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:46,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1012571840, now seen corresponding path program 1 times [2018-10-23 22:41:46,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:46,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:46,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:46,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:46,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:47,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:47,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:47,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:47,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:47,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:47,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:47,118 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-23 22:41:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:53,337 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-23 22:41:53,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:53,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-23 22:41:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:53,362 INFO L225 Difference]: With dead ends: 2183 [2018-10-23 22:41:53,363 INFO L226 Difference]: Without dead ends: 1445 [2018-10-23 22:41:53,369 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 [2018-10-23 22:41:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-23 22:41:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-23 22:41:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-23 22:41:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-23 22:41:53,468 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 139 [2018-10-23 22:41:53,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:53,469 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-23 22:41:53,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:53,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-23 22:41:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-23 22:41:53,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:53,478 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:53,478 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:53,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:53,478 INFO L82 PathProgramCache]: Analyzing trace with hash -770120659, now seen corresponding path program 1 times [2018-10-23 22:41:53,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:53,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:53,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:53,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:53,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:53,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:53,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:53,718 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:53,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:53,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:53,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:53,720 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-23 22:41:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:58,961 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-23 22:41:58,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:58,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-23 22:41:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:58,985 INFO L225 Difference]: With dead ends: 3902 [2018-10-23 22:41:58,985 INFO L226 Difference]: Without dead ends: 2484 [2018-10-23 22:41:58,992 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 [2018-10-23 22:41:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-23 22:41:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-23 22:41:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-23 22:41:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-23 22:41:59,074 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 142 [2018-10-23 22:41:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:59,077 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-23 22:41:59,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:59,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-23 22:41:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-23 22:41:59,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:59,089 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-23 22:41:59,089 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:59,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1326532992, now seen corresponding path program 1 times [2018-10-23 22:41:59,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:59,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:59,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:59,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:59,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:59,437 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:41:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 48 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:41:59,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:41:59,877 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:41:59,878 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-10-23 22:41:59,881 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [327], [329], [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], [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], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-23 22:41:59,972 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:41:59,973 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:42:02,659 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:42:02,661 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:42:02,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:42:02,674 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:42:04,751 INFO L232 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 77.59% of their original sizes. [2018-10-23 22:42:04,751 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:42:05,210 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:42:05,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:42:05,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-23 22:42:05,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:42:05,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:42:05,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:42:05,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:42:05,216 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-23 22:42:07,625 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:43:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:43:00,986 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-23 22:43:00,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:43:00,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2018-10-23 22:43:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:43:01,001 INFO L225 Difference]: With dead ends: 5282 [2018-10-23 22:43:01,001 INFO L226 Difference]: Without dead ends: 2814 [2018-10-23 22:43:01,009 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:43:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-23 22:43:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-23 22:43:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-23 22:43:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-23 22:43:01,081 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 258 [2018-10-23 22:43:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:43:01,081 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-23 22:43:01,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:43:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-23 22:43:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-23 22:43:01,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:43:01,088 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:43:01,089 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:43:01,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:43:01,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1380972291, now seen corresponding path program 1 times [2018-10-23 22:43:01,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:43:01,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:43:01,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:43:01,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:43:01,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:43:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:43:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 167 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-23 22:43:01,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:43:01,465 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:43:01,465 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-10-23 22:43:01,466 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [327], [329], [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], [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], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-23 22:43:01,472 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:43:01,472 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:43:02,661 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:43:13,342 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 22:43:13,342 INFO L272 AbstractInterpreter]: Visited 126 different actions 484 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:43:13,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:43:13,350 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 22:43:13,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:43:13,350 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:43:13,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:43:13,361 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:43:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:43:13,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:43:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-23 22:43:14,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 22:43:14,397 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-23 22:43:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 167 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-23 22:43:15,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-23 22:43:15,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-23 22:43:15,008 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-23 22:43:15,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 22:43:15,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 22:43:15,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-23 22:43:15,010 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 9 states. [2018-10-23 22:43:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:43:33,897 INFO L93 Difference]: Finished difference Result 11117 states and 16850 transitions. [2018-10-23 22:43:33,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-23 22:43:33,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 350 [2018-10-23 22:43:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:43:33,939 INFO L225 Difference]: With dead ends: 11117 [2018-10-23 22:43:33,940 INFO L226 Difference]: Without dead ends: 7304 [2018-10-23 22:43:34,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 733 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2018-10-23 22:43:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2018-10-23 22:43:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 7038. [2018-10-23 22:43:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7038 states. [2018-10-23 22:43:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7038 states to 7038 states and 7989 transitions. [2018-10-23 22:43:34,213 INFO L78 Accepts]: Start accepts. Automaton has 7038 states and 7989 transitions. Word has length 350 [2018-10-23 22:43:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:43:34,214 INFO L481 AbstractCegarLoop]: Abstraction has 7038 states and 7989 transitions. [2018-10-23 22:43:34,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 22:43:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7038 states and 7989 transitions. [2018-10-23 22:43:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-10-23 22:43:34,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:43:34,228 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:43:34,229 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:43:34,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:43:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1331490203, now seen corresponding path program 1 times [2018-10-23 22:43:34,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:43:34,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:43:34,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:43:34,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:43:34,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:43:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:43:34,900 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-23 22:43:35,108 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-23 22:43:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 182 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-23 22:43:36,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:43:36,294 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:43:36,295 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 499 with the following transitions: [2018-10-23 22:43:36,297 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [327], [329], [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], [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], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-23 22:43:36,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:43:36,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:43:48,770 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:43:48,770 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:43:48,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:43:48,777 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:43:54,426 INFO L232 lantSequenceWeakener]: Weakened 496 states. On average, predicates are now at 77.48% of their original sizes. [2018-10-23 22:43:54,427 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:43:55,366 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:43:55,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:43:55,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2018-10-23 22:43:55,367 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:43:55,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 22:43:55,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 22:43:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-10-23 22:43:55,369 INFO L87 Difference]: Start difference. First operand 7038 states and 7989 transitions. Second operand 13 states. [2018-10-23 22:44:07,942 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:44:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:44:17,368 INFO L93 Difference]: Finished difference Result 14075 states and 16021 transitions. [2018-10-23 22:44:17,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 22:44:17,368 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 498 [2018-10-23 22:44:17,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:44:17,399 INFO L225 Difference]: With dead ends: 14075 [2018-10-23 22:44:17,399 INFO L226 Difference]: Without dead ends: 7381 [2018-10-23 22:44:17,418 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 508 GetRequests, 467 SyntacticMatches, 19 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-10-23 22:44:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2018-10-23 22:44:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7378. [2018-10-23 22:44:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7378 states. [2018-10-23 22:44:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 8335 transitions. [2018-10-23 22:44:17,595 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 8335 transitions. Word has length 498 [2018-10-23 22:44:17,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:44:17,596 INFO L481 AbstractCegarLoop]: Abstraction has 7378 states and 8335 transitions. [2018-10-23 22:44:17,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 22:44:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 8335 transitions. [2018-10-23 22:44:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2018-10-23 22:44:17,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:44:17,614 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:44:17,615 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:44:17,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:44:17,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1570202143, now seen corresponding path program 1 times [2018-10-23 22:44:17,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:44:17,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:44:17,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:44:17,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:44:17,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:44:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:44:18,019 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:44:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 108 proven. 389 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-23 22:44:18,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:44:18,624 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:44:18,624 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 608 with the following transitions: [2018-10-23 22:44:18,625 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [327], [329], [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], [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], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-23 22:44:18,632 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:44:18,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:44:19,975 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:44:48,282 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:44:48,282 INFO L272 AbstractInterpreter]: Visited 258 different actions 1023 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-23 22:44:48,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:44:48,292 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:44:54,903 INFO L232 lantSequenceWeakener]: Weakened 166 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-23 22:44:54,904 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 22:45:19,252 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:45:19,258 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:45:19,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:45:19 BoogieIcfgContainer [2018-10-23 22:45:19,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:45:19,259 INFO L168 Benchmark]: Toolchain (without parser) took 225270.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 739.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:45:19,260 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-23 22:45:19,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1129.21 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:45:19,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 296.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -868.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:45:19,263 INFO L168 Benchmark]: Boogie Preprocessor took 203.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:45:19,264 INFO L168 Benchmark]: RCFGBuilder took 6464.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 251.6 MB). Peak memory consumption was 251.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:45:19,264 INFO L168 Benchmark]: TraceAbstraction took 217171.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 500.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:45:19,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1129.21 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 296.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -868.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6464.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 251.6 MB). Peak memory consumption was 251.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217171.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 500.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 79). Cancelled while BasicCegarLoop was analyzing trace of length 608 with TraceHistMax 5,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 217.0s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 112.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1151 SDtfs, 10062 SDslu, 1300 SDs, 0 SdLazy, 18119 SolverSat, 4316 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1572 GetRequests, 1458 SyntacticMatches, 24 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7378occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 56.8s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9969602514919008 AbsIntWeakeningRatio, 0.07058823529411765 AbsIntAvgWeakeningVarsNumRemoved, 305.1764705882353 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 302 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1768 NumberOfCodeBlocks, 1768 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2110 ConstructedInterpolants, 0 QuantifiedInterpolants, 3823279 SizeOfPredicates, 1 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 1267/1718 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown