java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/divbin.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:15:21,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:15:21,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:15:21,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:15:21,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:15:21,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:15:21,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:15:21,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:15:21,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:15:21,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:15:21,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:15:21,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:15:21,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:15:21,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:15:21,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:15:21,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:15:21,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:15:21,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:15:21,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:15:21,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:15:21,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:15:21,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:15:21,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:15:21,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:15:21,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:15:21,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:15:21,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:15:21,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:15:21,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-03 20:15:21,687 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:15:21,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:15:21,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:15:21,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:15:21,689 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:15:21,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:15:21,689 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:15:21,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:15:21,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:15:21,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:15:21,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:15:21,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:15:21,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:15:21,690 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:15:21,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:15:21,691 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:15:21,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:15:21,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:15:21,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:15:21,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:15:21,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:15:21,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:15:21,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:15:21,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:15:21,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:15:21,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:15:21,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:15:21,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:15:21,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:15:21,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:15:21,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:15:21,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:15:21,738 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:15:21,738 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:15:21,739 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/divbin.c [2019-09-03 20:15:21,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33a0792b/f8c1c14ee7c54ff19737f405f06f3d9a/FLAG10e481f2e [2019-09-03 20:15:22,211 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:15:22,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/divbin.c [2019-09-03 20:15:22,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33a0792b/f8c1c14ee7c54ff19737f405f06f3d9a/FLAG10e481f2e [2019-09-03 20:15:22,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33a0792b/f8c1c14ee7c54ff19737f405f06f3d9a [2019-09-03 20:15:22,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:15:22,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:15:22,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:15:22,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:15:22,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:15:22,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:22,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6390ccb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22, skipping insertion in model container [2019-09-03 20:15:22,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:22,643 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:15:22,661 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:15:22,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:15:22,918 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:15:22,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:15:22,973 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:15:22,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22 WrapperNode [2019-09-03 20:15:22,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:15:22,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:15:22,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:15:22,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:15:23,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:23,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:23,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:23,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:23,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:23,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:23,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... [2019-09-03 20:15:23,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:15:23,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:15:23,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:15:23,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:15:23,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:15:23,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:15:23,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:15:23,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:15:23,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:15:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:15:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:15:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:15:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:15:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:15:23,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:15:23,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:15:23,446 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:15:23,447 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-03 20:15:23,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:15:23 BoogieIcfgContainer [2019-09-03 20:15:23,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:15:23,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:15:23,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:15:23,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:15:23,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:15:22" (1/3) ... [2019-09-03 20:15:23,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bdfc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:15:23, skipping insertion in model container [2019-09-03 20:15:23,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:15:22" (2/3) ... [2019-09-03 20:15:23,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bdfc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:15:23, skipping insertion in model container [2019-09-03 20:15:23,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:15:23" (3/3) ... [2019-09-03 20:15:23,475 INFO L109 eAbstractionObserver]: Analyzing ICFG divbin.c [2019-09-03 20:15:23,501 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:15:23,518 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:15:23,561 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:15:23,600 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:15:23,601 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:15:23,601 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:15:23,601 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:15:23,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:15:23,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:15:23,602 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:15:23,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:15:23,602 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:15:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-03 20:15:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:15:23,623 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:15:23,624 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:15:23,626 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:15:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:15:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash -783376379, now seen corresponding path program 1 times [2019-09-03 20:15:23,633 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:15:23,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:15:23,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:23,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:23,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:15:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:15:23,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:15:23,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:15:23,758 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:15:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:15:23,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:15:23,771 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-03 20:15:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:15:23,796 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2019-09-03 20:15:23,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:15:23,798 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 20:15:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:15:23,809 INFO L225 Difference]: With dead ends: 39 [2019-09-03 20:15:23,809 INFO L226 Difference]: Without dead ends: 18 [2019-09-03 20:15:23,813 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:15:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-03 20:15:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-03 20:15:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 20:15:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-09-03 20:15:23,854 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2019-09-03 20:15:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:15:23,855 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-09-03 20:15:23,855 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:15:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-09-03 20:15:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 20:15:23,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:15:23,857 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:15:23,857 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:15:23,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:15:23,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1238212304, now seen corresponding path program 1 times [2019-09-03 20:15:23,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:15:23,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:15:23,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:23,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:23,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:23,868 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:15:23,868 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:15:23,868 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:15:23,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:15:23,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-03 20:15:23,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:15:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:15:23,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:15:23,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:15:23,983 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:15:23,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:15:23,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:15:23,984 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2019-09-03 20:15:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:15:24,074 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-09-03 20:15:24,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:15:24,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-09-03 20:15:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:15:24,077 INFO L225 Difference]: With dead ends: 29 [2019-09-03 20:15:24,077 INFO L226 Difference]: Without dead ends: 26 [2019-09-03 20:15:24,079 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:15:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-03 20:15:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-03 20:15:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-03 20:15:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-09-03 20:15:24,090 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2019-09-03 20:15:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:15:24,090 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-09-03 20:15:24,090 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:15:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-09-03 20:15:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-03 20:15:24,091 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:15:24,092 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:15:24,092 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:15:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:15:24,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1076826781, now seen corresponding path program 1 times [2019-09-03 20:15:24,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:15:24,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:15:24,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:24,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,101 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:15:24,101 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:15:24,101 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:15:24,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:15:24,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-03 20:15:24,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:15:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:15:24,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:15:24,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 20:15:24,150 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 20:15:24,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 20:15:24,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:15:24,151 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2019-09-03 20:15:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:15:24,170 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2019-09-03 20:15:24,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 20:15:24,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-09-03 20:15:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:15:24,172 INFO L225 Difference]: With dead ends: 50 [2019-09-03 20:15:24,172 INFO L226 Difference]: Without dead ends: 28 [2019-09-03 20:15:24,173 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:15:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-03 20:15:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-03 20:15:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-03 20:15:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-03 20:15:24,180 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2019-09-03 20:15:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:15:24,180 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-03 20:15:24,180 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 20:15:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-03 20:15:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-03 20:15:24,181 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:15:24,182 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:15:24,182 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:15:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:15:24,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1643387496, now seen corresponding path program 1 times [2019-09-03 20:15:24,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:15:24,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:15:24,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:24,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,198 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:15:24,199 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:15:24,199 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:15:24,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:15:24,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-03 20:15:24,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:15:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-03 20:15:24,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:15:24,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-09-03 20:15:24,283 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:15:24,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:15:24,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:15:24,285 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2019-09-03 20:15:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:15:24,425 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-09-03 20:15:24,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:15:24,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-09-03 20:15:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:15:24,429 INFO L225 Difference]: With dead ends: 38 [2019-09-03 20:15:24,429 INFO L226 Difference]: Without dead ends: 35 [2019-09-03 20:15:24,431 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:15:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-03 20:15:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-03 20:15:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-03 20:15:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-09-03 20:15:24,443 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2019-09-03 20:15:24,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:15:24,444 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-09-03 20:15:24,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:15:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-09-03 20:15:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-03 20:15:24,448 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:15:24,448 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:15:24,448 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:15:24,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:15:24,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1005474043, now seen corresponding path program 2 times [2019-09-03 20:15:24,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:15:24,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:15:24,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:15:24,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,475 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:15:24,478 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:15:24,479 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:15:24,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 20:15:24,529 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:15:24,530 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:15:24,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-03 20:15:24,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:15:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-03 20:15:24,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:15:24,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-09-03 20:15:24,582 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 20:15:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 20:15:24,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:15:24,584 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2019-09-03 20:15:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:15:24,638 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2019-09-03 20:15:24,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 20:15:24,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-09-03 20:15:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:15:24,641 INFO L225 Difference]: With dead ends: 73 [2019-09-03 20:15:24,641 INFO L226 Difference]: Without dead ends: 37 [2019-09-03 20:15:24,642 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:15:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-03 20:15:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-09-03 20:15:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-03 20:15:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-09-03 20:15:24,661 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2019-09-03 20:15:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:15:24,661 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-09-03 20:15:24,663 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 20:15:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-09-03 20:15:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-03 20:15:24,665 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:15:24,665 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:15:24,665 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:15:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:15:24,666 INFO L82 PathProgramCache]: Analyzing trace with hash 365642816, now seen corresponding path program 3 times [2019-09-03 20:15:24,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:15:24,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:15:24,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,667 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:15:24,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:15:24,685 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:15:24,686 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:15:24,686 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:15:24,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-03 20:15:24,728 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-03 20:15:24,729 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:15:24,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 33 conjunts are in the unsatisfiable core [2019-09-03 20:15:24,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:15:24,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:15:24,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:15:55,570 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-09-03 20:15:55,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:15:55,772 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:581) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1428) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:631) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2019-09-03 20:15:55,779 INFO L168 Benchmark]: Toolchain (without parser) took 33151.79 ms. Allocated memory was 131.6 MB in the beginning and 222.3 MB in the end (delta: 90.7 MB). Free memory was 86.4 MB in the beginning and 182.3 MB in the end (delta: -95.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 20:15:55,780 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:15:55,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.48 ms. Allocated memory is still 131.6 MB. Free memory was 86.0 MB in the beginning and 76.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:15:55,784 INFO L168 Benchmark]: Boogie Preprocessor took 166.31 ms. Allocated memory was 131.6 MB in the beginning and 201.3 MB in the end (delta: 69.7 MB). Free memory was 76.7 MB in the beginning and 177.7 MB in the end (delta: -101.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:15:55,787 INFO L168 Benchmark]: RCFGBuilder took 311.42 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 165.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:15:55,792 INFO L168 Benchmark]: TraceAbstraction took 32322.32 ms. Allocated memory was 201.3 MB in the beginning and 222.3 MB in the end (delta: 21.0 MB). Free memory was 165.6 MB in the beginning and 182.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:15:55,804 INFO L335 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 131.6 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.48 ms. Allocated memory is still 131.6 MB. Free memory was 86.0 MB in the beginning and 76.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.31 ms. Allocated memory was 131.6 MB in the beginning and 201.3 MB in the end (delta: 69.7 MB). Free memory was 76.7 MB in the beginning and 177.7 MB in the end (delta: -101.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.42 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 165.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32322.32 ms. Allocated memory was 201.3 MB in the beginning and 222.3 MB in the end (delta: 21.0 MB). Free memory was 165.6 MB in the beginning and 182.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...