java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 05:01:50,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 05:01:50,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 05:01:50,652 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 05:01:50,653 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 05:01:50,654 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 05:01:50,655 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 05:01:50,657 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 05:01:50,658 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 05:01:50,660 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 05:01:50,661 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 05:01:50,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 05:01:50,662 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 05:01:50,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 05:01:50,666 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 05:01:50,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 05:01:50,668 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 05:01:50,677 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 05:01:50,679 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 05:01:50,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 05:01:50,681 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 05:01:50,685 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 05:01:50,687 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 05:01:50,694 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 05:01:50,695 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 05:01:50,695 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 05:01:50,696 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 05:01:50,696 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 05:01:50,720 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 05:01:50,720 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 05:01:50,722 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 05:01:50,722 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 05:01:50,722 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 05:01:50,722 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 05:01:50,722 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 05:01:50,723 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 05:01:50,723 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 05:01:50,723 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 05:01:50,723 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 05:01:50,723 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 05:01:50,724 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 05:01:50,724 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 05:01:50,724 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 05:01:50,725 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 05:01:50,726 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 05:01:50,726 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 05:01:50,726 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 05:01:50,726 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 05:01:50,727 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 05:01:50,727 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 05:01:50,727 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 05:01:50,727 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 05:01:50,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 05:01:50,728 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 05:01:50,728 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 05:01:50,728 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 05:01:50,728 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 05:01:50,728 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 05:01:50,728 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 05:01:50,728 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 05:01:50,729 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 05:01:50,729 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 05:01:50,729 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 05:01:50,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 05:01:50,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 05:01:50,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 05:01:50,804 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 05:01:50,804 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 05:01:50,805 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-07-21 05:01:51,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/364fac029/64feb51ecf574bcb8013e5d178f9bb05/FLAG949e585ef [2018-07-21 05:01:51,753 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 05:01:51,754 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-07-21 05:01:51,786 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/364fac029/64feb51ecf574bcb8013e5d178f9bb05/FLAG949e585ef [2018-07-21 05:01:52,020 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/364fac029/64feb51ecf574bcb8013e5d178f9bb05 [2018-07-21 05:01:52,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 05:01:52,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 05:01:52,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 05:01:52,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 05:01:52,044 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 05:01:52,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:01:52" (1/1) ... [2018-07-21 05:01:52,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708af1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:52, skipping insertion in model container [2018-07-21 05:01:52,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:01:52" (1/1) ... [2018-07-21 05:01:52,361 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 05:01:53,255 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 05:01:53,275 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 05:01:53,881 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 05:01:54,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54 WrapperNode [2018-07-21 05:01:54,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 05:01:54,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 05:01:54,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 05:01:54,225 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 05:01:54,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:54,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:54,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 05:01:54,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 05:01:54,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 05:01:54,503 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 05:01:54,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:54,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:54,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:54,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:55,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:55,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:55,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... [2018-07-21 05:01:55,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 05:01:55,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 05:01:55,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 05:01:55,439 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 05:01:55,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 05:01:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 05:01:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 05:01:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 05:01:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 05:01:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-21 05:01:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-21 05:01:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 05:01:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 05:01:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-21 05:01:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-21 05:02:07,586 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 05:02:07,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:02:07 BoogieIcfgContainer [2018-07-21 05:02:07,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 05:02:07,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 05:02:07,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 05:02:07,640 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 05:02:07,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:01:52" (1/3) ... [2018-07-21 05:02:07,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b642d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:02:07, skipping insertion in model container [2018-07-21 05:02:07,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:01:54" (2/3) ... [2018-07-21 05:02:07,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b642d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:02:07, skipping insertion in model container [2018-07-21 05:02:07,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:02:07" (3/3) ... [2018-07-21 05:02:07,645 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label04_false-unreach-call.c [2018-07-21 05:02:07,655 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 05:02:07,669 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 05:02:07,747 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 05:02:07,747 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 05:02:07,748 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 05:02:07,748 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 05:02:07,748 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 05:02:07,748 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 05:02:07,748 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 05:02:07,748 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 05:02:07,748 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 05:02:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-21 05:02:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-21 05:02:07,814 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 05:02:07,815 INFO L358 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] [2018-07-21 05:02:07,815 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 05:02:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2038004126, now seen corresponding path program 1 times [2018-07-21 05:02:07,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 05:02:07,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:02:07,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:02:07,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:02:07,886 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 05:02:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:02:08,345 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-07-21 05:02:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 05:02:08,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 05:02:08,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 05:02:08,356 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 05:02:08,360 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 05:02:08,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 05:02:08,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 05:02:08,379 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-21 05:02:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 05:02:18,539 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-07-21 05:02:18,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 05:02:18,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-07-21 05:02:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 05:02:18,580 INFO L225 Difference]: With dead ends: 2139 [2018-07-21 05:02:18,580 INFO L226 Difference]: Without dead ends: 1529 [2018-07-21 05:02:18,592 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 05:02:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-07-21 05:02:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-07-21 05:02:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-07-21 05:02:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-07-21 05:02:18,769 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 27 [2018-07-21 05:02:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 05:02:18,770 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-07-21 05:02:18,770 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 05:02:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-07-21 05:02:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-21 05:02:18,777 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 05:02:18,780 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 05:02:18,780 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 05:02:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash -914706543, now seen corresponding path program 1 times [2018-07-21 05:02:18,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 05:02:18,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:02:18,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:02:18,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:02:18,782 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 05:02:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:02:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 05:02:19,206 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 05:02:19,206 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 05:02:19,207 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2018-07-21 05:02:19,210 INFO L201 CegarAbsIntRunner]: [0], [1], [714], [718], [724], [728], [730], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [850], [852], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 05:02:19,302 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 05:02:19,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 05:02:25,128 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 05:02:41,797 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-21 05:02:41,799 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 05:02:41,848 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-21 05:02:41,849 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 05:02:41,849 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-21 05:02:41,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:02:41,874 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 05:02:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:02:42,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 05:02:45,936 WARN L169 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 32 [2018-07-21 05:02:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 05:02:48,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 05:02:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 05:02:48,504 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-21 05:02:48,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-07-21 05:02:48,504 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 05:02:48,505 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 05:02:48,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 05:02:48,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-07-21 05:02:48,505 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 3 states. [2018-07-21 05:02:54,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 05:02:54,405 INFO L93 Difference]: Finished difference Result 4365 states and 7037 transitions. [2018-07-21 05:02:54,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 05:02:54,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2018-07-21 05:02:54,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 05:02:54,428 INFO L225 Difference]: With dead ends: 4365 [2018-07-21 05:02:54,428 INFO L226 Difference]: Without dead ends: 2844 [2018-07-21 05:02:54,439 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-07-21 05:02:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2018-07-21 05:02:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2842. [2018-07-21 05:02:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2018-07-21 05:02:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 4073 transitions. [2018-07-21 05:02:54,576 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 4073 transitions. Word has length 102 [2018-07-21 05:02:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 05:02:54,577 INFO L471 AbstractCegarLoop]: Abstraction has 2842 states and 4073 transitions. [2018-07-21 05:02:54,578 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 05:02:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 4073 transitions. [2018-07-21 05:02:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-21 05:02:54,596 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 05:02:54,597 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 05:02:54,597 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 05:02:54,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1626473394, now seen corresponding path program 1 times [2018-07-21 05:02:54,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 05:02:54,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:02:54,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:02:54,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:02:54,602 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 05:02:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:02:54,982 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 05:02:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 05:02:55,383 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 05:02:55,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 05:02:55,383 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 05:02:55,384 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 05:02:55,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 05:02:55,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 05:02:55,385 INFO L87 Difference]: Start difference. First operand 2842 states and 4073 transitions. Second operand 6 states. [2018-07-21 05:03:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 05:03:04,195 INFO L93 Difference]: Finished difference Result 8436 states and 12565 transitions. [2018-07-21 05:03:04,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 05:03:04,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-07-21 05:03:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 05:03:04,241 INFO L225 Difference]: With dead ends: 8436 [2018-07-21 05:03:04,241 INFO L226 Difference]: Without dead ends: 5600 [2018-07-21 05:03:04,253 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 05:03:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2018-07-21 05:03:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5558. [2018-07-21 05:03:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5558 states. [2018-07-21 05:03:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 7674 transitions. [2018-07-21 05:03:04,544 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 7674 transitions. Word has length 143 [2018-07-21 05:03:04,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 05:03:04,545 INFO L471 AbstractCegarLoop]: Abstraction has 5558 states and 7674 transitions. [2018-07-21 05:03:04,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 05:03:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 7674 transitions. [2018-07-21 05:03:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-21 05:03:04,557 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 05:03:04,557 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 05:03:04,557 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 05:03:04,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1586805778, now seen corresponding path program 1 times [2018-07-21 05:03:04,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 05:03:04,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:03:04,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:03:04,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:03:04,559 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 05:03:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:03:04,952 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 05:03:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 05:03:05,397 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 05:03:05,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 05:03:05,397 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 05:03:05,398 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 05:03:05,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 05:03:05,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 05:03:05,398 INFO L87 Difference]: Start difference. First operand 5558 states and 7674 transitions. Second operand 6 states. [2018-07-21 05:03:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 05:03:11,033 INFO L93 Difference]: Finished difference Result 13843 states and 19405 transitions. [2018-07-21 05:03:11,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 05:03:11,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-07-21 05:03:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 05:03:11,089 INFO L225 Difference]: With dead ends: 13843 [2018-07-21 05:03:11,089 INFO L226 Difference]: Without dead ends: 8291 [2018-07-21 05:03:11,113 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 05:03:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8291 states. [2018-07-21 05:03:11,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8291 to 8229. [2018-07-21 05:03:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8229 states. [2018-07-21 05:03:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8229 states to 8229 states and 10198 transitions. [2018-07-21 05:03:11,541 INFO L78 Accepts]: Start accepts. Automaton has 8229 states and 10198 transitions. Word has length 161 [2018-07-21 05:03:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 05:03:11,541 INFO L471 AbstractCegarLoop]: Abstraction has 8229 states and 10198 transitions. [2018-07-21 05:03:11,541 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 05:03:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8229 states and 10198 transitions. [2018-07-21 05:03:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-21 05:03:11,548 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 05:03:11,552 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 05:03:11,553 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 05:03:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash 76243295, now seen corresponding path program 1 times [2018-07-21 05:03:11,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 05:03:11,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:03:11,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 05:03:11,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 05:03:11,554 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 05:03:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 05:03:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 92 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 05:03:11,971 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 05:03:11,971 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 05:03:11,971 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-07-21 05:03:11,971 INFO L201 CegarAbsIntRunner]: [0], [1], [714], [718], [724], [728], [730], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [850], [852], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1279], [1283], [1287], [1291], [1295], [1299], [1302], [1303], [1306], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 05:03:11,979 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 05:03:11,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 05:03:17,138 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown