java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:22:27,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:22:27,803 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:22:27,816 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:22:27,816 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:22:27,817 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:22:27,819 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:22:27,821 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:22:27,822 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:22:27,823 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:22:27,824 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:22:27,824 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:22:27,825 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:22:27,826 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:22:27,827 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:22:27,828 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:22:27,829 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:22:27,831 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:22:27,833 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:22:27,835 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:22:27,836 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:22:27,838 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:22:27,840 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 18:22:27,854 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 18:22:27,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:22:27,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:22:27,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:22:27,887 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:22:27,887 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:22:27,887 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:22:27,887 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:22:27,888 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:22:27,888 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:22:27,888 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:22:27,888 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:22:27,889 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:22:27,889 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:22:27,890 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:22:27,890 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:22:27,890 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:22:27,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:22:27,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:22:27,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:22:27,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:22:27,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:22:27,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:22:27,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:22:27,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:22:27,893 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:22:27,893 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:22:27,894 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:22:27,894 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:22:27,894 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:22:27,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:22:27,894 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:22:27,895 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:22:27,895 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:22:27,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:22:27,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:22:27,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:22:27,971 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:22:27,972 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:22:27,973 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44_false-unreach-call_false-termination.c [2018-07-23 18:22:28,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4714d3558/5e071298331740d1a5bb4d509108a4b7/FLAG96cadd8bc [2018-07-23 18:22:28,632 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:22:28,633 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label44_false-unreach-call_false-termination.c [2018-07-23 18:22:28,667 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4714d3558/5e071298331740d1a5bb4d509108a4b7/FLAG96cadd8bc [2018-07-23 18:22:28,692 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4714d3558/5e071298331740d1a5bb4d509108a4b7 [2018-07-23 18:22:28,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:22:28,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:22:28,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:22:28,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:22:28,727 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:22:28,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:22:28" (1/1) ... [2018-07-23 18:22:28,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77928ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:28, skipping insertion in model container [2018-07-23 18:22:28,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:22:28" (1/1) ... [2018-07-23 18:22:29,020 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:22:29,289 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:22:29,318 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:22:29,484 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:22:29,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29 WrapperNode [2018-07-23 18:22:29,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:22:29,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:22:29,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:22:29,540 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:22:29,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:22:29,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:22:29,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:22:29,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:22:29,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... [2018-07-23 18:22:29,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:22:29,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:22:29,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:22:29,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:22:29,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:22:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:22:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:22:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:22:30,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:22:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:22:30,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:22:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 18:22:30,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 18:22:34,011 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:22:34,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:22:34 BoogieIcfgContainer [2018-07-23 18:22:34,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:22:34,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:22:34,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:22:34,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:22:34,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:22:28" (1/3) ... [2018-07-23 18:22:34,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3e8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:22:34, skipping insertion in model container [2018-07-23 18:22:34,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:22:29" (2/3) ... [2018-07-23 18:22:34,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3e8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:22:34, skipping insertion in model container [2018-07-23 18:22:34,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:22:34" (3/3) ... [2018-07-23 18:22:34,025 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label44_false-unreach-call_false-termination.c [2018-07-23 18:22:34,038 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:22:34,050 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:22:34,134 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:22:34,135 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:22:34,136 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:22:34,136 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:22:34,136 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:22:34,137 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:22:34,137 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:22:34,137 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:22:34,138 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:22:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 18:22:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-23 18:22:34,208 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:22:34,212 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:22:34,213 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:22:34,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1531759435, now seen corresponding path program 1 times [2018-07-23 18:22:34,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:22:34,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:34,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:22:34,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:34,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:22:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:22:34,997 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:22:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:22:35,158 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:22:35,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:22:35,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:22:35,165 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:22:35,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:22:35,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:22:35,193 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 18:22:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:22:36,745 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 18:22:36,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:22:36,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2018-07-23 18:22:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:22:36,777 INFO L225 Difference]: With dead ends: 550 [2018-07-23 18:22:36,777 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 18:22:36,784 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:22:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 18:22:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 18:22:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 18:22:36,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-07-23 18:22:36,872 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 91 [2018-07-23 18:22:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:22:36,873 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-07-23 18:22:36,874 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:22:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-07-23 18:22:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 18:22:36,881 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:22:36,881 INFO L353 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, 1, 1, 1, 1] [2018-07-23 18:22:36,881 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:22:36,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1361434462, now seen corresponding path program 1 times [2018-07-23 18:22:36,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:22:36,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:36,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:22:36,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:36,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:22:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:22:37,181 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:22:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:22:37,337 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:22:37,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 18:22:37,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:22:37,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 18:22:37,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 18:22:37,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:22:37,341 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-07-23 18:22:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:22:39,461 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-07-23 18:22:39,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 18:22:39,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-07-23 18:22:39,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:22:39,473 INFO L225 Difference]: With dead ends: 1075 [2018-07-23 18:22:39,473 INFO L226 Difference]: Without dead ends: 741 [2018-07-23 18:22:39,481 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:22:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-07-23 18:22:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-07-23 18:22:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-07-23 18:22:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-07-23 18:22:39,538 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 102 [2018-07-23 18:22:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:22:39,539 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-07-23 18:22:39,539 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 18:22:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-07-23 18:22:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-23 18:22:39,543 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:22:39,544 INFO L353 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, 1, 1, 1, 1] [2018-07-23 18:22:39,544 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:22:39,544 INFO L82 PathProgramCache]: Analyzing trace with hash -74528094, now seen corresponding path program 1 times [2018-07-23 18:22:39,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:22:39,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:39,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:22:39,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:39,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:22:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:22:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:22:39,777 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:22:39,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:22:39,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:22:39,778 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:22:39,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:22:39,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:22:39,781 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 3 states. [2018-07-23 18:22:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:22:41,922 INFO L93 Difference]: Finished difference Result 2065 states and 3370 transitions. [2018-07-23 18:22:41,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:22:41,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2018-07-23 18:22:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:22:41,945 INFO L225 Difference]: With dead ends: 2065 [2018-07-23 18:22:41,946 INFO L226 Difference]: Without dead ends: 1347 [2018-07-23 18:22:41,951 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:22:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2018-07-23 18:22:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1346. [2018-07-23 18:22:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1346 states. [2018-07-23 18:22:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1974 transitions. [2018-07-23 18:22:42,053 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1974 transitions. Word has length 103 [2018-07-23 18:22:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:22:42,055 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1974 transitions. [2018-07-23 18:22:42,056 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:22:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1974 transitions. [2018-07-23 18:22:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 18:22:42,067 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:22:42,067 INFO L353 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, 1, 1, 1, 1] [2018-07-23 18:22:42,067 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:22:42,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1113805794, now seen corresponding path program 1 times [2018-07-23 18:22:42,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:22:42,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:42,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:22:42,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:42,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:22:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:22:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:22:42,353 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:22:42,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:22:42,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:22:42,354 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:22:42,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:22:42,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:22:42,355 INFO L87 Difference]: Start difference. First operand 1346 states and 1974 transitions. Second operand 3 states. [2018-07-23 18:22:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:22:43,742 INFO L93 Difference]: Finished difference Result 3570 states and 5312 transitions. [2018-07-23 18:22:43,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:22:43,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2018-07-23 18:22:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:22:43,760 INFO L225 Difference]: With dead ends: 3570 [2018-07-23 18:22:43,760 INFO L226 Difference]: Without dead ends: 2230 [2018-07-23 18:22:43,769 INFO L573 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 [2018-07-23 18:22:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-07-23 18:22:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2226. [2018-07-23 18:22:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2226 states. [2018-07-23 18:22:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3055 transitions. [2018-07-23 18:22:43,840 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3055 transitions. Word has length 104 [2018-07-23 18:22:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:22:43,840 INFO L471 AbstractCegarLoop]: Abstraction has 2226 states and 3055 transitions. [2018-07-23 18:22:43,841 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:22:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3055 transitions. [2018-07-23 18:22:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-23 18:22:43,849 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:22:43,850 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:22:43,850 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:22:43,850 INFO L82 PathProgramCache]: Analyzing trace with hash -84553095, now seen corresponding path program 1 times [2018-07-23 18:22:43,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:22:43,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:43,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:22:43,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:43,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:22:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:22:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:22:44,056 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:22:44,057 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:22:44,058 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2018-07-23 18:22:44,060 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [29], [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], [229], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [781], [782], [783], [784], [786], [787] [2018-07-23 18:22:44,131 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:22:44,131 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:24:29,843 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:24:29,845 INFO L272 AbstractInterpreter]: Visited 95 different actions 161 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 18:24:29,861 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:24:44,579 INFO L232 lantSequenceWeakener]: Weakened 157 states. On average, predicates are now at 80.13% of their original sizes. [2018-07-23 18:24:44,579 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:24:48,457 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:24:48,458 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:24:48,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-07-23 18:24:48,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:24:48,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 18:24:48,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 18:24:48,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-07-23 18:24:48,461 INFO L87 Difference]: Start difference. First operand 2226 states and 3055 transitions. Second operand 19 states. [2018-07-23 18:25:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:25:18,458 INFO L93 Difference]: Finished difference Result 4652 states and 6421 transitions. [2018-07-23 18:25:18,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 18:25:18,459 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 159 [2018-07-23 18:25:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:25:18,474 INFO L225 Difference]: With dead ends: 4652 [2018-07-23 18:25:18,474 INFO L226 Difference]: Without dead ends: 2432 [2018-07-23 18:25:18,484 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 177 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 18:25:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2018-07-23 18:25:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2425. [2018-07-23 18:25:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2018-07-23 18:25:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3270 transitions. [2018-07-23 18:25:18,562 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3270 transitions. Word has length 159 [2018-07-23 18:25:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:25:18,563 INFO L471 AbstractCegarLoop]: Abstraction has 2425 states and 3270 transitions. [2018-07-23 18:25:18,563 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 18:25:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3270 transitions. [2018-07-23 18:25:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 18:25:18,572 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:25:18,573 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:25:18,573 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:25:18,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2063356520, now seen corresponding path program 1 times [2018-07-23 18:25:18,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:25:18,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:25:18,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:25:18,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:25:18,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:25:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:25:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 85 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-23 18:25:18,763 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:25:18,764 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:25:18,764 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-07-23 18:25:18,764 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [30], [33], [34], [38], [41], [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], [229], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [781], [782], [783], [784], [786], [787] [2018-07-23 18:25:18,772 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:25:18,772 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 18:26:52,034 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 18:26:52,036 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 18:26:52,037 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:26:52,037 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:26:52,037 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-23 18:26:52,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:26:52,047 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:26:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:26:52,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:26:52,233 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 18:26:52,434 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:26:52,435 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 18:26:52,440 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 18:26:52,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:26:52 BoogieIcfgContainer [2018-07-23 18:26:52,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:26:52,442 INFO L168 Benchmark]: Toolchain (without parser) took 263732.05 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -462.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-23 18:26:52,443 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 18:26:52,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:52,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:52,445 INFO L168 Benchmark]: Boogie Preprocessor took 288.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -812.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:52,446 INFO L168 Benchmark]: RCFGBuilder took 4049.95 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 122.8 MB). Peak memory consumption was 122.8 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:52,447 INFO L168 Benchmark]: TraceAbstraction took 258426.27 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 185.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-23 18:26:52,457 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 819.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 135.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 288.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -812.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4049.95 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 122.8 MB). Peak memory consumption was 122.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258426.27 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 185.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 428]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 428). Cancelled while BasicCegarLoop was analyzing trace of length 173 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 258.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 37.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 825 SDtfs, 2157 SDslu, 342 SDs, 0 SdLazy, 2841 SolverSat, 717 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 200 GetRequests, 150 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2425occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 199.0s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9943986239139064 AbsIntWeakeningRatio, 0.22151898734177214 AbsIntAvgWeakeningVarsNumRemoved, 111.16455696202532 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 559 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 179546 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 96/98 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label44_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_18-26-52-474.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label44_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_18-26-52-474.csv Completed graceful shutdown