java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:25:19,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:25:19,729 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:25:19,742 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:25:19,743 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:25:19,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:25:19,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:25:19,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:25:19,750 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:25:19,751 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:25:19,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:25:19,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:25:19,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:25:19,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:25:19,756 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:25:19,757 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:25:19,758 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:25:19,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:25:19,762 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:25:19,767 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:25:19,768 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:25:19,773 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:25:19,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:25:19,788 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:25:19,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:25:19,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:25:19,803 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:25:19,803 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:25:19,804 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:25:19,804 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:25:19,804 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:25:19,804 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:25:19,804 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:25:19,805 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:25:19,805 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:25:19,805 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:25:19,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:25:19,806 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:25:19,806 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:25:19,806 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:25:19,806 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:25:19,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:25:19,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:25:19,807 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:25:19,807 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:25:19,807 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:25:19,807 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:25:19,808 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:25:19,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:25:19,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:25:19,808 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:25:19,808 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:25:19,809 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:25:19,809 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:25:19,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:25:19,809 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:25:19,809 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:25:19,810 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:25:19,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:25:19,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:25:19,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:25:19,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:25:19,888 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:25:19,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-10-23 22:25:19,951 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/33019bf6a/8caebd64eeba410b859ec14b9382cc79/FLAGc63a8a259 [2018-10-23 22:25:20,574 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:25:20,575 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-10-23 22:25:20,597 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/33019bf6a/8caebd64eeba410b859ec14b9382cc79/FLAGc63a8a259 [2018-10-23 22:25:20,620 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/33019bf6a/8caebd64eeba410b859ec14b9382cc79 [2018-10-23 22:25:20,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:25:20,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:25:20,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:25:20,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:25:20,639 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:25:20,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:25:20" (1/1) ... [2018-10-23 22:25:20,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ad0ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:20, skipping insertion in model container [2018-10-23 22:25:20,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:25:20" (1/1) ... [2018-10-23 22:25:20,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:25:20,746 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:25:21,242 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:25:21,246 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:25:21,424 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:25:21,442 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:25:21,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21 WrapperNode [2018-10-23 22:25:21,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:25:21,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:25:21,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:25:21,445 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:25:21,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:25:21,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:25:21,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:25:21,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:25:21,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... [2018-10-23 22:25:21,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:25:21,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:25:21,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:25:21,810 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:25:21,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:25:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:25:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:25:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:25:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:25:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:25:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:25:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:25:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:25:25,591 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:25:25,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:25:25 BoogieIcfgContainer [2018-10-23 22:25:25,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:25:25,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:25:25,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:25:25,597 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:25:25,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:25:20" (1/3) ... [2018-10-23 22:25:25,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6935051f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:25:25, skipping insertion in model container [2018-10-23 22:25:25,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:21" (2/3) ... [2018-10-23 22:25:25,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6935051f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:25:25, skipping insertion in model container [2018-10-23 22:25:25,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:25:25" (3/3) ... [2018-10-23 22:25:25,602 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label14_false-unreach-call_false-termination.c [2018-10-23 22:25:25,612 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:25:25,621 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:25:25,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:25:25,679 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:25:25,679 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:25:25,680 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:25:25,680 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:25:25,680 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:25:25,680 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:25:25,680 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:25:25,681 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:25:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:25:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-23 22:25:25,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:25,717 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:25,720 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:25,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:25,726 INFO L82 PathProgramCache]: Analyzing trace with hash 707504249, now seen corresponding path program 1 times [2018-10-23 22:25:25,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:25,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:25,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:25,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:25,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:26,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:26,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:25:26,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:26,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:25:26,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:25:26,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:25:26,148 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-23 22:25:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:29,238 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-23 22:25:29,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:25:29,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-23 22:25:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:29,264 INFO L225 Difference]: With dead ends: 894 [2018-10-23 22:25:29,264 INFO L226 Difference]: Without dead ends: 633 [2018-10-23 22:25:29,272 INFO L605 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 [2018-10-23 22:25:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-23 22:25:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-23 22:25:29,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-23 22:25:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-10-23 22:25:29,367 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 33 [2018-10-23 22:25:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:29,367 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-10-23 22:25:29,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:25:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-10-23 22:25:29,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-23 22:25:29,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:29,381 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:29,381 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:29,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:29,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1856067133, now seen corresponding path program 1 times [2018-10-23 22:25:29,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:29,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:29,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:29,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:29,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:29,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:29,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:25:29,750 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:29,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:25:29,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:25:29,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:25:29,753 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-10-23 22:25:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:33,372 INFO L93 Difference]: Finished difference Result 2358 states and 3924 transitions. [2018-10-23 22:25:33,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:25:33,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2018-10-23 22:25:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:33,393 INFO L225 Difference]: With dead ends: 2358 [2018-10-23 22:25:33,393 INFO L226 Difference]: Without dead ends: 1731 [2018-10-23 22:25:33,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:25:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-23 22:25:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-23 22:25:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-23 22:25:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2619 transitions. [2018-10-23 22:25:33,503 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2619 transitions. Word has length 146 [2018-10-23 22:25:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:33,505 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2619 transitions. [2018-10-23 22:25:33,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:25:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2619 transitions. [2018-10-23 22:25:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-23 22:25:33,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:33,524 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:33,525 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:33,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:33,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1192336806, now seen corresponding path program 1 times [2018-10-23 22:25:33,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:33,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:33,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:33,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:33,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:34,159 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-23 22:25:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:25:34,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:25:34,521 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:25:34,523 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-23 22:25:34,524 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:25:34,594 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:25:34,595 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:25:36,047 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:25:38,853 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:25:38,855 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:25:38,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:38,896 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:25:41,349 INFO L232 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 77.69% of their original sizes. [2018-10-23 22:25:41,349 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:25:41,736 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:25:41,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:25:41,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-23 22:25:41,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:41,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:25:41,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:25:41,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:25:41,739 INFO L87 Difference]: Start difference. First operand 1731 states and 2619 transitions. Second operand 7 states. [2018-10-23 22:26:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:26:10,354 INFO L93 Difference]: Finished difference Result 3641 states and 5473 transitions. [2018-10-23 22:26:10,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:26:10,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-10-23 22:26:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:26:10,367 INFO L225 Difference]: With dead ends: 3641 [2018-10-23 22:26:10,367 INFO L226 Difference]: Without dead ends: 1916 [2018-10-23 22:26:10,374 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:26:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-23 22:26:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-23 22:26:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-23 22:26:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2810 transitions. [2018-10-23 22:26:10,430 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2810 transitions. Word has length 220 [2018-10-23 22:26:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:26:10,431 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2810 transitions. [2018-10-23 22:26:10,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:26:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2810 transitions. [2018-10-23 22:26:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-23 22:26:10,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:26:10,439 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 22:26:10,440 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:26:10,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1747869460, now seen corresponding path program 1 times [2018-10-23 22:26:10,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:26:10,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:10,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:26:10,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:10,442 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:26:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:26:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 166 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:26:11,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:26:11,240 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:26:11,240 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-10-23 22:26:11,241 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:26:11,248 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:26:11,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:26:11,962 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:26:16,770 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:26:16,770 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:26:16,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:16,781 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:26:19,639 INFO L232 lantSequenceWeakener]: Weakened 91 states. On average, predicates are now at 78.69% of their original sizes. [2018-10-23 22:26:19,639 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:27:10,515 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:27:10,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:27:10,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [12] total 33 [2018-10-23 22:27:10,516 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:27:10,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-23 22:27:10,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-23 22:27:10,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-10-23 22:27:10,518 INFO L87 Difference]: Start difference. First operand 1914 states and 2810 transitions. Second operand 23 states. [2018-10-23 22:29:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:06,454 INFO L93 Difference]: Finished difference Result 4202 states and 6175 transitions. [2018-10-23 22:29:06,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 22:29:06,454 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 305 [2018-10-23 22:29:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:06,467 INFO L225 Difference]: With dead ends: 4202 [2018-10-23 22:29:06,468 INFO L226 Difference]: Without dead ends: 2477 [2018-10-23 22:29:06,475 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 318 GetRequests, 223 SyntacticMatches, 60 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 55.0s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2018-10-23 22:29:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2018-10-23 22:29:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 2473. [2018-10-23 22:29:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2473 states. [2018-10-23 22:29:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3401 transitions. [2018-10-23 22:29:06,658 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3401 transitions. Word has length 305 [2018-10-23 22:29:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:06,659 INFO L481 AbstractCegarLoop]: Abstraction has 2473 states and 3401 transitions. [2018-10-23 22:29:06,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-23 22:29:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3401 transitions. [2018-10-23 22:29:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-23 22:29:06,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:06,668 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 22:29:06,668 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:06,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:06,669 INFO L82 PathProgramCache]: Analyzing trace with hash 930742976, now seen corresponding path program 1 times [2018-10-23 22:29:06,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:06,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:06,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:06,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:06,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:07,168 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:07,381 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:29:07,589 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 91 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:29:08,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:08,223 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:08,223 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-23 22:29:08,224 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:08,229 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:08,229 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:09,060 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:29:15,173 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:15,173 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. Received shutdown request... [2018-10-23 22:29:15,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:15,192 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:29:18,470 INFO L232 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 77.89% of their original sizes. [2018-10-23 22:29:18,470 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:29:18,543 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:29:18,548 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:29:18,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:29:18 BoogieIcfgContainer [2018-10-23 22:29:18,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:29:18,549 INFO L168 Benchmark]: Toolchain (without parser) took 237915.92 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -663.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 22:29:18,550 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:29:18,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 808.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:18,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 219.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:18,553 INFO L168 Benchmark]: Boogie Preprocessor took 145.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:18,554 INFO L168 Benchmark]: RCFGBuilder took 3782.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:18,554 INFO L168 Benchmark]: TraceAbstraction took 232955.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -6.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 22:29:18,560 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 808.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 219.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3782.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232955.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -6.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was analyzing trace of length 332 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 151.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 719 SDtfs, 3031 SDslu, 578 SDs, 0 SdLazy, 5301 SolverSat, 859 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 549 GetRequests, 444 SyntacticMatches, 60 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 55.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2473occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.8s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9954529622644714 AbsIntWeakeningRatio, 0.10550996483001172 AbsIntAvgWeakeningVarsNumRemoved, 367.47713950762017 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 700 ConstructedInterpolants, 0 QuantifiedInterpolants, 1920170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 254/463 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown