java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/standard_init5_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 03:35:24,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 03:35:24,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 03:35:24,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 03:35:24,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 03:35:24,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 03:35:24,602 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 03:35:24,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 03:35:24,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 03:35:24,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 03:35:24,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 03:35:24,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 03:35:24,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 03:35:24,609 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 03:35:24,610 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 03:35:24,611 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 03:35:24,612 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 03:35:24,613 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 03:35:24,613 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 03:35:24,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 03:35:24,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 03:35:24,619 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 03:35:24,620 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 03:35:24,620 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-30 03:35:24,629 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 03:35:24,629 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 03:35:24,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 03:35:24,629 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 03:35:24,630 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 03:35:24,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 03:35:24,630 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 03:35:24,631 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 03:35:24,631 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 03:35:24,631 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 03:35:24,631 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 03:35:24,631 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 03:35:24,631 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 03:35:24,631 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 03:35:24,633 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 03:35:24,633 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 03:35:24,634 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 03:35:24,634 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 03:35:24,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 03:35:24,661 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 03:35:24,663 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 03:35:24,664 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 03:35:24,664 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 03:35:24,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init5_true-unreach-call_ground.i [2018-01-30 03:35:24,727 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 03:35:24,728 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 03:35:24,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 03:35:24,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 03:35:24,732 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 03:35:24,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fba2422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24, skipping insertion in model container [2018-01-30 03:35:24,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,746 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 03:35:24,755 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 03:35:24,826 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 03:35:24,835 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 03:35:24,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24 WrapperNode [2018-01-30 03:35:24,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 03:35:24,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 03:35:24,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 03:35:24,838 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 03:35:24,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... [2018-01-30 03:35:24,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 03:35:24,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 03:35:24,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 03:35:24,856 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 03:35:24,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 03:35:24,893 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 03:35:24,893 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 03:35:24,893 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 03:35:24,893 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 03:35:24,893 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 03:35:24,893 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 03:35:24,894 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 03:35:24,894 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 03:35:24,894 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 03:35:25,133 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 03:35:25,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:35:25 BoogieIcfgContainer [2018-01-30 03:35:25,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 03:35:25,134 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 03:35:25,134 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 03:35:25,134 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 03:35:25,136 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:35:25" (1/1) ... [2018-01-30 03:35:25,139 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 03:35:25,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 03:35:25 BasicIcfg [2018-01-30 03:35:25,146 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 03:35:25,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 03:35:25,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 03:35:25,148 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 03:35:25,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 03:35:24" (1/4) ... [2018-01-30 03:35:25,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8f57db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 03:35:25, skipping insertion in model container [2018-01-30 03:35:25,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:35:24" (2/4) ... [2018-01-30 03:35:25,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8f57db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 03:35:25, skipping insertion in model container [2018-01-30 03:35:25,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:35:25" (3/4) ... [2018-01-30 03:35:25,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8f57db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 03:35:25, skipping insertion in model container [2018-01-30 03:35:25,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 03:35:25" (4/4) ... [2018-01-30 03:35:25,150 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_init5_true-unreach-call_ground.ileft_unchanged_by_heapseparator [2018-01-30 03:35:25,155 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 03:35:25,160 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 03:35:25,183 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 03:35:25,183 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 03:35:25,183 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 03:35:25,183 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 03:35:25,183 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 03:35:25,183 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 03:35:25,183 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 03:35:25,183 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 03:35:25,184 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 03:35:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-01-30 03:35:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-30 03:35:25,196 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:25,197 INFO L350 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] [2018-01-30 03:35:25,197 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:25,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1146096173, now seen corresponding path program 1 times [2018-01-30 03:35:25,201 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:25,201 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:25,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,230 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:25,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:25,249 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:35:25,267 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 03:35:25,267 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 03:35:25,268 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 03:35:25,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 03:35:25,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 03:35:25,277 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-01-30 03:35:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:25,290 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2018-01-30 03:35:25,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 03:35:25,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-01-30 03:35:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:25,298 INFO L225 Difference]: With dead ends: 88 [2018-01-30 03:35:25,298 INFO L226 Difference]: Without dead ends: 44 [2018-01-30 03:35:25,300 INFO L553 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 [2018-01-30 03:35:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-30 03:35:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-01-30 03:35:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-30 03:35:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-01-30 03:35:25,321 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 23 [2018-01-30 03:35:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:25,321 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-01-30 03:35:25,321 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 03:35:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-01-30 03:35:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-30 03:35:25,322 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:25,322 INFO L350 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] [2018-01-30 03:35:25,322 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:25,322 INFO L82 PathProgramCache]: Analyzing trace with hash 515691078, now seen corresponding path program 1 times [2018-01-30 03:35:25,322 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:25,322 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:25,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,323 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:25,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:25,328 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:35:25,410 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 03:35:25,410 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 03:35:25,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 03:35:25,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 03:35:25,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 03:35:25,412 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 3 states. [2018-01-30 03:35:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:25,532 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2018-01-30 03:35:25,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 03:35:25,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-01-30 03:35:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:25,533 INFO L225 Difference]: With dead ends: 98 [2018-01-30 03:35:25,533 INFO L226 Difference]: Without dead ends: 64 [2018-01-30 03:35:25,534 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 03:35:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-30 03:35:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2018-01-30 03:35:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-30 03:35:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2018-01-30 03:35:25,538 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 28 [2018-01-30 03:35:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:25,538 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2018-01-30 03:35:25,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 03:35:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2018-01-30 03:35:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-30 03:35:25,539 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:25,539 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:25,539 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:25,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1358545237, now seen corresponding path program 1 times [2018-01-30 03:35:25,539 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:25,540 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:25,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,540 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:25,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:25,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-30 03:35:25,588 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:25,588 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:25,602 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:25,633 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-30 03:35:25,663 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:25,663 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-01-30 03:35:25,664 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 03:35:25,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 03:35:25,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 03:35:25,664 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 4 states. [2018-01-30 03:35:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:25,889 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2018-01-30 03:35:25,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 03:35:25,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-01-30 03:35:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:25,891 INFO L225 Difference]: With dead ends: 126 [2018-01-30 03:35:25,891 INFO L226 Difference]: Without dead ends: 84 [2018-01-30 03:35:25,891 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 03:35:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-30 03:35:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2018-01-30 03:35:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-30 03:35:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2018-01-30 03:35:25,895 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 48 [2018-01-30 03:35:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:25,896 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2018-01-30 03:35:25,896 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 03:35:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2018-01-30 03:35:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-01-30 03:35:25,897 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:25,897 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-01-30 03:35:25,897 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:25,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2005239440, now seen corresponding path program 2 times [2018-01-30 03:35:25,897 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:25,897 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:25,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,898 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:25,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:25,913 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-30 03:35:25,981 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:25,981 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:25,991 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:35:25,998 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:26,012 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:26,025 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:26,026 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-30 03:35:26,049 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:26,049 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 03:35:26,049 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 03:35:26,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 03:35:26,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-30 03:35:26,049 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 5 states. [2018-01-30 03:35:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:26,202 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2018-01-30 03:35:26,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-30 03:35:26,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2018-01-30 03:35:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:26,206 INFO L225 Difference]: With dead ends: 162 [2018-01-30 03:35:26,206 INFO L226 Difference]: Without dead ends: 104 [2018-01-30 03:35:26,206 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-30 03:35:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-01-30 03:35:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2018-01-30 03:35:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-30 03:35:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2018-01-30 03:35:26,218 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 68 [2018-01-30 03:35:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:26,218 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2018-01-30 03:35:26,218 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 03:35:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2018-01-30 03:35:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-01-30 03:35:26,219 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:26,221 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:26,221 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:26,222 INFO L82 PathProgramCache]: Analyzing trace with hash -990123531, now seen corresponding path program 3 times [2018-01-30 03:35:26,222 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:26,222 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:26,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:26,222 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:26,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:26,241 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:35:26,478 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:26,478 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 03:35:26,491 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:26,497 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:26,510 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:26,517 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:26,520 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:26,521 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:26,523 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:35:26,549 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:26,549 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-30 03:35:26,549 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 03:35:26,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 03:35:26,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 03:35:26,550 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 6 states. [2018-01-30 03:35:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:26,710 INFO L93 Difference]: Finished difference Result 198 states and 214 transitions. [2018-01-30 03:35:26,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 03:35:26,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-01-30 03:35:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:26,711 INFO L225 Difference]: With dead ends: 198 [2018-01-30 03:35:26,711 INFO L226 Difference]: Without dead ends: 124 [2018-01-30 03:35:26,711 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 03:35:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-30 03:35:26,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 114. [2018-01-30 03:35:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-30 03:35:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2018-01-30 03:35:26,717 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 88 [2018-01-30 03:35:26,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:26,717 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2018-01-30 03:35:26,717 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 03:35:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2018-01-30 03:35:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-01-30 03:35:26,718 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:26,718 INFO L350 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:26,718 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:26,719 INFO L82 PathProgramCache]: Analyzing trace with hash 571123930, now seen corresponding path program 4 times [2018-01-30 03:35:26,719 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:26,719 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:26,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:26,719 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:26,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:26,732 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-01-30 03:35:26,821 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:26,821 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:26,826 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:35:26,858 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:26,860 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-01-30 03:35:26,883 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:26,884 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 03:35:26,884 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 03:35:26,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 03:35:26,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-30 03:35:26,884 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand 7 states. [2018-01-30 03:35:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:27,119 INFO L93 Difference]: Finished difference Result 234 states and 250 transitions. [2018-01-30 03:35:27,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 03:35:27,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2018-01-30 03:35:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:27,120 INFO L225 Difference]: With dead ends: 234 [2018-01-30 03:35:27,120 INFO L226 Difference]: Without dead ends: 144 [2018-01-30 03:35:27,120 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-30 03:35:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-30 03:35:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 134. [2018-01-30 03:35:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-30 03:35:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 140 transitions. [2018-01-30 03:35:27,125 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 140 transitions. Word has length 108 [2018-01-30 03:35:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:27,125 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 140 transitions. [2018-01-30 03:35:27,125 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 03:35:27,125 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 140 transitions. [2018-01-30 03:35:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-01-30 03:35:27,126 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:27,126 INFO L350 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:27,126 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:27,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1489829057, now seen corresponding path program 5 times [2018-01-30 03:35:27,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:27,127 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:27,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:27,127 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:27,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:27,140 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-01-30 03:35:27,296 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:27,296 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:27,301 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:35:27,310 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:27,313 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:27,315 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:27,318 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:27,320 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:27,480 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:27,482 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:27,485 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-01-30 03:35:27,518 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:27,519 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-01-30 03:35:27,519 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-30 03:35:27,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-30 03:35:27,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 03:35:27,519 INFO L87 Difference]: Start difference. First operand 134 states and 140 transitions. Second operand 8 states. [2018-01-30 03:35:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:27,675 INFO L93 Difference]: Finished difference Result 270 states and 286 transitions. [2018-01-30 03:35:27,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 03:35:27,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2018-01-30 03:35:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:27,676 INFO L225 Difference]: With dead ends: 270 [2018-01-30 03:35:27,676 INFO L226 Difference]: Without dead ends: 164 [2018-01-30 03:35:27,676 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 03:35:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-01-30 03:35:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 154. [2018-01-30 03:35:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-30 03:35:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 160 transitions. [2018-01-30 03:35:27,681 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 160 transitions. Word has length 128 [2018-01-30 03:35:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:27,681 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 160 transitions. [2018-01-30 03:35:27,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-30 03:35:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 160 transitions. [2018-01-30 03:35:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-30 03:35:27,682 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:27,682 INFO L350 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:27,682 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1255553316, now seen corresponding path program 6 times [2018-01-30 03:35:27,682 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:27,683 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:27,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:27,683 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:27,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:27,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-01-30 03:35:27,774 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:27,774 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:27,792 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:35:27,800 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:27,813 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:27,826 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:27,839 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:27,853 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:27,860 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:27,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:27,885 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:27,887 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-01-30 03:35:27,932 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:27,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 03:35:27,932 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 03:35:27,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 03:35:27,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 03:35:27,932 INFO L87 Difference]: Start difference. First operand 154 states and 160 transitions. Second operand 9 states. [2018-01-30 03:35:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:28,094 INFO L93 Difference]: Finished difference Result 306 states and 322 transitions. [2018-01-30 03:35:28,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 03:35:28,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2018-01-30 03:35:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:28,094 INFO L225 Difference]: With dead ends: 306 [2018-01-30 03:35:28,094 INFO L226 Difference]: Without dead ends: 184 [2018-01-30 03:35:28,095 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 03:35:28,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-01-30 03:35:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174. [2018-01-30 03:35:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-30 03:35:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2018-01-30 03:35:28,099 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 148 [2018-01-30 03:35:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:28,099 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2018-01-30 03:35:28,099 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 03:35:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2018-01-30 03:35:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-01-30 03:35:28,100 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:28,101 INFO L350 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:28,101 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:28,101 INFO L82 PathProgramCache]: Analyzing trace with hash 825592457, now seen corresponding path program 7 times [2018-01-30 03:35:28,101 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:28,101 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:28,101 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:28,101 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:28,102 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:28,114 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-01-30 03:35:28,452 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:28,452 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:28,457 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:28,474 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-01-30 03:35:28,507 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:28,507 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-01-30 03:35:28,508 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 03:35:28,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 03:35:28,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 03:35:28,508 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand 10 states. [2018-01-30 03:35:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:28,714 INFO L93 Difference]: Finished difference Result 342 states and 358 transitions. [2018-01-30 03:35:28,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-30 03:35:28,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2018-01-30 03:35:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:28,715 INFO L225 Difference]: With dead ends: 342 [2018-01-30 03:35:28,715 INFO L226 Difference]: Without dead ends: 204 [2018-01-30 03:35:28,716 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 03:35:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-30 03:35:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 194. [2018-01-30 03:35:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-30 03:35:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 200 transitions. [2018-01-30 03:35:28,720 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 200 transitions. Word has length 168 [2018-01-30 03:35:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:28,720 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 200 transitions. [2018-01-30 03:35:28,720 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 03:35:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 200 transitions. [2018-01-30 03:35:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-01-30 03:35:28,721 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:28,721 INFO L350 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:28,722 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:28,722 INFO L82 PathProgramCache]: Analyzing trace with hash -59623570, now seen corresponding path program 8 times [2018-01-30 03:35:28,722 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:28,722 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:28,722 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:28,722 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:28,722 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:28,735 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-01-30 03:35:28,887 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:28,887 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:28,893 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:35:28,900 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:28,914 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:28,915 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:28,917 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-01-30 03:35:28,963 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:28,963 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-30 03:35:28,964 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 03:35:28,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 03:35:28,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 03:35:28,964 INFO L87 Difference]: Start difference. First operand 194 states and 200 transitions. Second operand 11 states. [2018-01-30 03:35:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:29,175 INFO L93 Difference]: Finished difference Result 378 states and 394 transitions. [2018-01-30 03:35:29,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-30 03:35:29,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2018-01-30 03:35:29,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:29,176 INFO L225 Difference]: With dead ends: 378 [2018-01-30 03:35:29,176 INFO L226 Difference]: Without dead ends: 224 [2018-01-30 03:35:29,176 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 03:35:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-01-30 03:35:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2018-01-30 03:35:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-30 03:35:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 220 transitions. [2018-01-30 03:35:29,183 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 220 transitions. Word has length 188 [2018-01-30 03:35:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:29,183 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 220 transitions. [2018-01-30 03:35:29,183 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 03:35:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 220 transitions. [2018-01-30 03:35:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-30 03:35:29,189 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:29,189 INFO L350 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:29,189 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:29,190 INFO L82 PathProgramCache]: Analyzing trace with hash 479035347, now seen corresponding path program 9 times [2018-01-30 03:35:29,190 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:29,190 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:29,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:29,190 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:29,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:29,205 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-01-30 03:35:29,348 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:29,348 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:29,352 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:35:29,358 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,366 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,368 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,370 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,372 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,375 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,380 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,393 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,397 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,403 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:29,404 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:29,406 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-01-30 03:35:29,439 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:29,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-01-30 03:35:29,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 03:35:29,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 03:35:29,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 03:35:29,439 INFO L87 Difference]: Start difference. First operand 214 states and 220 transitions. Second operand 12 states. [2018-01-30 03:35:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:29,683 INFO L93 Difference]: Finished difference Result 414 states and 430 transitions. [2018-01-30 03:35:29,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 03:35:29,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 208 [2018-01-30 03:35:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:29,684 INFO L225 Difference]: With dead ends: 414 [2018-01-30 03:35:29,684 INFO L226 Difference]: Without dead ends: 244 [2018-01-30 03:35:29,684 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 03:35:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-01-30 03:35:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2018-01-30 03:35:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-01-30 03:35:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 240 transitions. [2018-01-30 03:35:29,687 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 240 transitions. Word has length 208 [2018-01-30 03:35:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:29,687 INFO L432 AbstractCegarLoop]: Abstraction has 234 states and 240 transitions. [2018-01-30 03:35:29,688 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 03:35:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 240 transitions. [2018-01-30 03:35:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-01-30 03:35:29,689 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:29,689 INFO L350 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:29,689 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:29,689 INFO L82 PathProgramCache]: Analyzing trace with hash 526951352, now seen corresponding path program 10 times [2018-01-30 03:35:29,689 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:29,689 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:29,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:29,690 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:29,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:29,701 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-01-30 03:35:29,821 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:29,821 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:29,825 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:35:29,860 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:29,862 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-01-30 03:35:29,905 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:29,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 03:35:29,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 03:35:29,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 03:35:29,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-30 03:35:29,906 INFO L87 Difference]: Start difference. First operand 234 states and 240 transitions. Second operand 13 states. [2018-01-30 03:35:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:30,137 INFO L93 Difference]: Finished difference Result 450 states and 466 transitions. [2018-01-30 03:35:30,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 03:35:30,137 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 228 [2018-01-30 03:35:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:30,138 INFO L225 Difference]: With dead ends: 450 [2018-01-30 03:35:30,138 INFO L226 Difference]: Without dead ends: 264 [2018-01-30 03:35:30,138 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-30 03:35:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-30 03:35:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 254. [2018-01-30 03:35:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-01-30 03:35:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 260 transitions. [2018-01-30 03:35:30,144 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 260 transitions. Word has length 228 [2018-01-30 03:35:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:30,147 INFO L432 AbstractCegarLoop]: Abstraction has 254 states and 260 transitions. [2018-01-30 03:35:30,147 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 03:35:30,147 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 260 transitions. [2018-01-30 03:35:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-01-30 03:35:30,147 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:30,148 INFO L350 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:30,148 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:30,148 INFO L82 PathProgramCache]: Analyzing trace with hash 12903197, now seen corresponding path program 11 times [2018-01-30 03:35:30,148 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:30,148 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:30,148 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:30,148 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:30,148 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:30,165 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-01-30 03:35:30,586 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:30,586 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:30,595 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:35:30,602 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,604 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,606 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,608 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,611 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,614 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,618 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,621 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,626 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,710 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:30,711 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:30,714 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-01-30 03:35:30,758 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:30,758 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-01-30 03:35:30,758 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 03:35:30,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 03:35:30,759 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-30 03:35:30,759 INFO L87 Difference]: Start difference. First operand 254 states and 260 transitions. Second operand 14 states. [2018-01-30 03:35:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:31,355 INFO L93 Difference]: Finished difference Result 486 states and 502 transitions. [2018-01-30 03:35:31,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-30 03:35:31,356 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 248 [2018-01-30 03:35:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:31,357 INFO L225 Difference]: With dead ends: 486 [2018-01-30 03:35:31,357 INFO L226 Difference]: Without dead ends: 284 [2018-01-30 03:35:31,357 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-30 03:35:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-01-30 03:35:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2018-01-30 03:35:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-01-30 03:35:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 280 transitions. [2018-01-30 03:35:31,361 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 280 transitions. Word has length 248 [2018-01-30 03:35:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:31,361 INFO L432 AbstractCegarLoop]: Abstraction has 274 states and 280 transitions. [2018-01-30 03:35:31,361 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 03:35:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 280 transitions. [2018-01-30 03:35:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-01-30 03:35:31,362 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:31,362 INFO L350 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:31,362 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2051243522, now seen corresponding path program 12 times [2018-01-30 03:35:31,362 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:31,362 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:31,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:31,363 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:31,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:31,373 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-01-30 03:35:31,636 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:31,636 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:31,640 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:35:31,647 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,649 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,651 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,653 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,654 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,669 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,680 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,683 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,686 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,690 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,695 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,710 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:31,711 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:31,713 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-01-30 03:35:31,753 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:31,754 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 03:35:31,754 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 03:35:31,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 03:35:31,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 03:35:31,754 INFO L87 Difference]: Start difference. First operand 274 states and 280 transitions. Second operand 15 states. [2018-01-30 03:35:32,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:32,018 INFO L93 Difference]: Finished difference Result 522 states and 538 transitions. [2018-01-30 03:35:32,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 03:35:32,019 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 268 [2018-01-30 03:35:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:32,020 INFO L225 Difference]: With dead ends: 522 [2018-01-30 03:35:32,020 INFO L226 Difference]: Without dead ends: 304 [2018-01-30 03:35:32,021 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 03:35:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-01-30 03:35:32,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2018-01-30 03:35:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-01-30 03:35:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 300 transitions. [2018-01-30 03:35:32,024 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 300 transitions. Word has length 268 [2018-01-30 03:35:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:32,025 INFO L432 AbstractCegarLoop]: Abstraction has 294 states and 300 transitions. [2018-01-30 03:35:32,025 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 03:35:32,025 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 300 transitions. [2018-01-30 03:35:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-30 03:35:32,026 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:32,026 INFO L350 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:32,026 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1399174247, now seen corresponding path program 13 times [2018-01-30 03:35:32,026 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:32,026 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:32,027 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:32,027 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:32,027 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:32,037 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-30 03:35:32,304 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:32,305 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:32,309 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:32,332 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-30 03:35:32,379 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:32,379 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-30 03:35:32,379 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 03:35:32,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 03:35:32,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 03:35:32,379 INFO L87 Difference]: Start difference. First operand 294 states and 300 transitions. Second operand 16 states. [2018-01-30 03:35:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:32,641 INFO L93 Difference]: Finished difference Result 558 states and 574 transitions. [2018-01-30 03:35:32,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 03:35:32,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 288 [2018-01-30 03:35:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:32,642 INFO L225 Difference]: With dead ends: 558 [2018-01-30 03:35:32,642 INFO L226 Difference]: Without dead ends: 324 [2018-01-30 03:35:32,643 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 03:35:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-30 03:35:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 314. [2018-01-30 03:35:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-01-30 03:35:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 320 transitions. [2018-01-30 03:35:32,646 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 320 transitions. Word has length 288 [2018-01-30 03:35:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:32,646 INFO L432 AbstractCegarLoop]: Abstraction has 314 states and 320 transitions. [2018-01-30 03:35:32,646 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 03:35:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 320 transitions. [2018-01-30 03:35:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-01-30 03:35:32,647 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:32,647 INFO L350 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:32,647 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:32,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1316174260, now seen corresponding path program 14 times [2018-01-30 03:35:32,648 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:32,648 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:32,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:32,648 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:32,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:32,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2018-01-30 03:35:33,112 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:33,112 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:33,120 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:35:33,127 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:33,141 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:33,143 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:33,146 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2018-01-30 03:35:33,194 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:33,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-30 03:35:33,194 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 03:35:33,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 03:35:33,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 03:35:33,195 INFO L87 Difference]: Start difference. First operand 314 states and 320 transitions. Second operand 17 states. [2018-01-30 03:35:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:33,448 INFO L93 Difference]: Finished difference Result 594 states and 610 transitions. [2018-01-30 03:35:33,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-30 03:35:33,448 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2018-01-30 03:35:33,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:33,449 INFO L225 Difference]: With dead ends: 594 [2018-01-30 03:35:33,449 INFO L226 Difference]: Without dead ends: 344 [2018-01-30 03:35:33,450 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 03:35:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-01-30 03:35:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 334. [2018-01-30 03:35:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-01-30 03:35:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 340 transitions. [2018-01-30 03:35:33,453 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 340 transitions. Word has length 308 [2018-01-30 03:35:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:33,453 INFO L432 AbstractCegarLoop]: Abstraction has 334 states and 340 transitions. [2018-01-30 03:35:33,453 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 03:35:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 340 transitions. [2018-01-30 03:35:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-01-30 03:35:33,454 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:33,454 INFO L350 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:33,454 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1744434097, now seen corresponding path program 15 times [2018-01-30 03:35:33,455 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:33,455 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:33,455 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:33,455 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:33,455 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:33,465 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2250 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2018-01-30 03:35:34,486 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:34,486 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:34,490 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:35:34,498 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,506 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,519 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,526 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,531 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,534 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,537 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,542 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,549 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,553 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,561 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,569 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,579 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,588 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,600 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,615 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:34,616 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:34,619 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2250 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2018-01-30 03:35:34,677 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:34,677 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-01-30 03:35:34,677 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 03:35:34,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 03:35:34,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 03:35:34,678 INFO L87 Difference]: Start difference. First operand 334 states and 340 transitions. Second operand 18 states. [2018-01-30 03:35:35,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:35,075 INFO L93 Difference]: Finished difference Result 630 states and 646 transitions. [2018-01-30 03:35:35,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 03:35:35,075 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 328 [2018-01-30 03:35:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:35,076 INFO L225 Difference]: With dead ends: 630 [2018-01-30 03:35:35,076 INFO L226 Difference]: Without dead ends: 364 [2018-01-30 03:35:35,077 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 03:35:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-30 03:35:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 354. [2018-01-30 03:35:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-01-30 03:35:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 360 transitions. [2018-01-30 03:35:35,080 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 360 transitions. Word has length 328 [2018-01-30 03:35:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:35,080 INFO L432 AbstractCegarLoop]: Abstraction has 354 states and 360 transitions. [2018-01-30 03:35:35,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 03:35:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 360 transitions. [2018-01-30 03:35:35,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-01-30 03:35:35,081 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:35,081 INFO L350 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:35,082 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1204714646, now seen corresponding path program 16 times [2018-01-30 03:35:35,082 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:35,082 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:35,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:35,082 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:35,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:35,092 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2560 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2018-01-30 03:35:35,719 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:35,719 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:35,727 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:35:35,764 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:35,766 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2560 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2018-01-30 03:35:35,834 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:35,835 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-01-30 03:35:35,835 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 03:35:35,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 03:35:35,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-30 03:35:35,835 INFO L87 Difference]: Start difference. First operand 354 states and 360 transitions. Second operand 19 states. [2018-01-30 03:35:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:36,038 INFO L93 Difference]: Finished difference Result 666 states and 682 transitions. [2018-01-30 03:35:36,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 03:35:36,038 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 348 [2018-01-30 03:35:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:36,039 INFO L225 Difference]: With dead ends: 666 [2018-01-30 03:35:36,040 INFO L226 Difference]: Without dead ends: 384 [2018-01-30 03:35:36,040 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-30 03:35:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-01-30 03:35:36,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 374. [2018-01-30 03:35:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-01-30 03:35:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 380 transitions. [2018-01-30 03:35:36,044 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 380 transitions. Word has length 348 [2018-01-30 03:35:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:36,044 INFO L432 AbstractCegarLoop]: Abstraction has 374 states and 380 transitions. [2018-01-30 03:35:36,044 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 03:35:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 380 transitions. [2018-01-30 03:35:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-30 03:35:36,046 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:36,046 INFO L350 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:36,046 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:36,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1879810299, now seen corresponding path program 17 times [2018-01-30 03:35:36,046 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:36,046 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:36,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:36,047 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:36,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:36,058 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2018-01-30 03:35:36,344 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:36,344 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:36,348 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:35:36,356 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,358 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,361 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,364 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,366 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,369 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,388 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,395 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,402 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,411 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,420 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,432 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:36,445 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:38,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:38,103 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:38,108 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2018-01-30 03:35:38,178 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:38,178 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-01-30 03:35:38,179 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 03:35:38,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 03:35:38,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 03:35:38,179 INFO L87 Difference]: Start difference. First operand 374 states and 380 transitions. Second operand 20 states. [2018-01-30 03:35:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:39,120 INFO L93 Difference]: Finished difference Result 702 states and 718 transitions. [2018-01-30 03:35:39,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-30 03:35:39,121 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 368 [2018-01-30 03:35:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:39,122 INFO L225 Difference]: With dead ends: 702 [2018-01-30 03:35:39,122 INFO L226 Difference]: Without dead ends: 404 [2018-01-30 03:35:39,122 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 03:35:39,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-01-30 03:35:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 394. [2018-01-30 03:35:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-01-30 03:35:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 400 transitions. [2018-01-30 03:35:39,125 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 400 transitions. Word has length 368 [2018-01-30 03:35:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:39,126 INFO L432 AbstractCegarLoop]: Abstraction has 394 states and 400 transitions. [2018-01-30 03:35:39,126 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 03:35:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 400 transitions. [2018-01-30 03:35:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-01-30 03:35:39,127 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:39,127 INFO L350 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:39,127 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1651334944, now seen corresponding path program 18 times [2018-01-30 03:35:39,127 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:39,127 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:39,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:39,128 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:39,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:39,138 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2018-01-30 03:35:39,651 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:39,651 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:39,655 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:35:39,664 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,666 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,667 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,669 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,678 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,685 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,690 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,695 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,701 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,708 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,715 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,722 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:39,900 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:40,044 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:40,179 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:40,181 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:40,184 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2018-01-30 03:35:40,245 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:40,246 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-30 03:35:40,246 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 03:35:40,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 03:35:40,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-30 03:35:40,246 INFO L87 Difference]: Start difference. First operand 394 states and 400 transitions. Second operand 21 states. [2018-01-30 03:35:40,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:40,476 INFO L93 Difference]: Finished difference Result 738 states and 754 transitions. [2018-01-30 03:35:40,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 03:35:40,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 388 [2018-01-30 03:35:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:40,477 INFO L225 Difference]: With dead ends: 738 [2018-01-30 03:35:40,477 INFO L226 Difference]: Without dead ends: 424 [2018-01-30 03:35:40,478 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-30 03:35:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-01-30 03:35:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 414. [2018-01-30 03:35:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-01-30 03:35:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 420 transitions. [2018-01-30 03:35:40,481 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 420 transitions. Word has length 388 [2018-01-30 03:35:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:40,481 INFO L432 AbstractCegarLoop]: Abstraction has 414 states and 420 transitions. [2018-01-30 03:35:40,481 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 03:35:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 420 transitions. [2018-01-30 03:35:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-30 03:35:40,482 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:40,483 INFO L350 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:40,483 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:40,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2066005061, now seen corresponding path program 19 times [2018-01-30 03:35:40,483 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:40,483 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:40,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:40,483 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:40,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:40,494 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3610 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2018-01-30 03:35:40,827 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:40,828 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:40,832 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:40,864 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3610 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2018-01-30 03:35:40,929 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:40,929 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-01-30 03:35:40,929 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 03:35:40,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 03:35:40,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 03:35:40,930 INFO L87 Difference]: Start difference. First operand 414 states and 420 transitions. Second operand 22 states. [2018-01-30 03:35:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:41,156 INFO L93 Difference]: Finished difference Result 774 states and 790 transitions. [2018-01-30 03:35:41,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-30 03:35:41,156 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 408 [2018-01-30 03:35:41,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:41,157 INFO L225 Difference]: With dead ends: 774 [2018-01-30 03:35:41,157 INFO L226 Difference]: Without dead ends: 444 [2018-01-30 03:35:41,157 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 03:35:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2018-01-30 03:35:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 434. [2018-01-30 03:35:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-01-30 03:35:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 440 transitions. [2018-01-30 03:35:41,161 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 440 transitions. Word has length 408 [2018-01-30 03:35:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:41,161 INFO L432 AbstractCegarLoop]: Abstraction has 434 states and 440 transitions. [2018-01-30 03:35:41,161 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 03:35:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 440 transitions. [2018-01-30 03:35:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-01-30 03:35:41,162 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:41,162 INFO L350 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:41,162 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:41,163 INFO L82 PathProgramCache]: Analyzing trace with hash -245157078, now seen corresponding path program 20 times [2018-01-30 03:35:41,163 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:41,163 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:41,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:41,163 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:41,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:41,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4000 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2018-01-30 03:35:41,660 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:41,660 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:41,665 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:35:41,674 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:41,694 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:41,698 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:41,700 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4000 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2018-01-30 03:35:41,778 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:41,778 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-01-30 03:35:41,779 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 03:35:41,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 03:35:41,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-30 03:35:41,779 INFO L87 Difference]: Start difference. First operand 434 states and 440 transitions. Second operand 23 states. [2018-01-30 03:35:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:42,500 INFO L93 Difference]: Finished difference Result 810 states and 826 transitions. [2018-01-30 03:35:42,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 03:35:42,504 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 428 [2018-01-30 03:35:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:42,505 INFO L225 Difference]: With dead ends: 810 [2018-01-30 03:35:42,505 INFO L226 Difference]: Without dead ends: 464 [2018-01-30 03:35:42,506 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-30 03:35:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2018-01-30 03:35:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 454. [2018-01-30 03:35:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2018-01-30 03:35:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 460 transitions. [2018-01-30 03:35:42,510 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 460 transitions. Word has length 428 [2018-01-30 03:35:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:42,510 INFO L432 AbstractCegarLoop]: Abstraction has 454 states and 460 transitions. [2018-01-30 03:35:42,510 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 03:35:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 460 transitions. [2018-01-30 03:35:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-30 03:35:42,512 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:42,512 INFO L350 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:42,512 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1993295247, now seen corresponding path program 21 times [2018-01-30 03:35:42,512 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:42,512 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:42,513 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:42,513 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:42,513 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:42,525 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4410 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2018-01-30 03:35:43,624 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:43,624 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:43,629 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:35:43,638 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,649 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,651 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,653 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,655 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,658 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,662 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,667 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,673 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,678 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,684 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,693 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,703 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,713 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,725 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,738 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,756 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,773 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,792 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,820 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,874 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:43,875 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:43,879 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4410 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2018-01-30 03:35:43,953 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:43,953 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-01-30 03:35:43,953 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 03:35:43,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 03:35:43,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 03:35:43,954 INFO L87 Difference]: Start difference. First operand 454 states and 460 transitions. Second operand 24 states. [2018-01-30 03:35:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:44,173 INFO L93 Difference]: Finished difference Result 846 states and 862 transitions. [2018-01-30 03:35:44,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 03:35:44,173 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 448 [2018-01-30 03:35:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:44,174 INFO L225 Difference]: With dead ends: 846 [2018-01-30 03:35:44,174 INFO L226 Difference]: Without dead ends: 484 [2018-01-30 03:35:44,175 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 03:35:44,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2018-01-30 03:35:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 474. [2018-01-30 03:35:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2018-01-30 03:35:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 480 transitions. [2018-01-30 03:35:44,179 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 480 transitions. Word has length 448 [2018-01-30 03:35:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:44,179 INFO L432 AbstractCegarLoop]: Abstraction has 474 states and 480 transitions. [2018-01-30 03:35:44,179 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 03:35:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 480 transitions. [2018-01-30 03:35:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-01-30 03:35:44,181 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:44,181 INFO L350 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:44,181 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:44,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1607086964, now seen corresponding path program 22 times [2018-01-30 03:35:44,181 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:44,181 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:44,182 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:44,182 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:44,182 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:44,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4840 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2018-01-30 03:35:44,622 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:44,622 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:44,626 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:35:44,681 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:44,684 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4840 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2018-01-30 03:35:44,762 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:44,762 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-01-30 03:35:44,762 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 03:35:44,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 03:35:44,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-30 03:35:44,763 INFO L87 Difference]: Start difference. First operand 474 states and 480 transitions. Second operand 25 states. [2018-01-30 03:35:45,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:45,243 INFO L93 Difference]: Finished difference Result 882 states and 898 transitions. [2018-01-30 03:35:45,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 03:35:45,243 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 468 [2018-01-30 03:35:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:45,244 INFO L225 Difference]: With dead ends: 882 [2018-01-30 03:35:45,245 INFO L226 Difference]: Without dead ends: 504 [2018-01-30 03:35:45,245 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-30 03:35:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2018-01-30 03:35:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 494. [2018-01-30 03:35:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2018-01-30 03:35:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 500 transitions. [2018-01-30 03:35:45,250 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 500 transitions. Word has length 468 [2018-01-30 03:35:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:45,250 INFO L432 AbstractCegarLoop]: Abstraction has 494 states and 500 transitions. [2018-01-30 03:35:45,250 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 03:35:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 500 transitions. [2018-01-30 03:35:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-01-30 03:35:45,252 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:45,252 INFO L350 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:45,252 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:45,252 INFO L82 PathProgramCache]: Analyzing trace with hash 781532377, now seen corresponding path program 23 times [2018-01-30 03:35:45,252 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:45,252 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:45,253 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:45,253 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:45,253 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:45,264 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5290 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2018-01-30 03:35:45,739 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:45,740 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:45,744 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:35:45,753 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,755 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,759 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,802 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,815 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,821 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,826 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,831 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,838 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,845 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,854 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,918 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,937 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,958 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:45,983 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:46,010 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:47,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:47,470 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:47,476 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5290 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2018-01-30 03:35:47,571 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:47,571 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-01-30 03:35:47,572 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 03:35:47,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 03:35:47,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-30 03:35:47,572 INFO L87 Difference]: Start difference. First operand 494 states and 500 transitions. Second operand 26 states. [2018-01-30 03:35:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:47,848 INFO L93 Difference]: Finished difference Result 918 states and 934 transitions. [2018-01-30 03:35:47,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-30 03:35:47,848 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 488 [2018-01-30 03:35:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:47,849 INFO L225 Difference]: With dead ends: 918 [2018-01-30 03:35:47,849 INFO L226 Difference]: Without dead ends: 524 [2018-01-30 03:35:47,850 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-30 03:35:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-01-30 03:35:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 514. [2018-01-30 03:35:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2018-01-30 03:35:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 520 transitions. [2018-01-30 03:35:47,864 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 520 transitions. Word has length 488 [2018-01-30 03:35:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:47,865 INFO L432 AbstractCegarLoop]: Abstraction has 514 states and 520 transitions. [2018-01-30 03:35:47,865 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 03:35:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 520 transitions. [2018-01-30 03:35:47,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-01-30 03:35:47,866 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:47,866 INFO L350 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:47,866 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:47,867 INFO L82 PathProgramCache]: Analyzing trace with hash -481189442, now seen corresponding path program 24 times [2018-01-30 03:35:47,867 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:47,867 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:47,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:47,867 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:47,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:47,879 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5760 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2018-01-30 03:35:48,645 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:48,645 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:48,658 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:35:48,670 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,682 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,696 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,711 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,713 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,716 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,719 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,723 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,730 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,734 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,747 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,761 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,768 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,775 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,786 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,807 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,821 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:48,840 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:49,355 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:50,661 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:35:50,664 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:50,671 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5760 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2018-01-30 03:35:50,778 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:50,779 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-01-30 03:35:50,779 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 03:35:50,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 03:35:50,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 03:35:50,779 INFO L87 Difference]: Start difference. First operand 514 states and 520 transitions. Second operand 27 states. [2018-01-30 03:35:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:51,081 INFO L93 Difference]: Finished difference Result 954 states and 970 transitions. [2018-01-30 03:35:51,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 03:35:51,081 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 508 [2018-01-30 03:35:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:51,082 INFO L225 Difference]: With dead ends: 954 [2018-01-30 03:35:51,082 INFO L226 Difference]: Without dead ends: 544 [2018-01-30 03:35:51,083 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 03:35:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2018-01-30 03:35:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 534. [2018-01-30 03:35:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2018-01-30 03:35:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 540 transitions. [2018-01-30 03:35:51,087 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 540 transitions. Word has length 508 [2018-01-30 03:35:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:51,087 INFO L432 AbstractCegarLoop]: Abstraction has 534 states and 540 transitions. [2018-01-30 03:35:51,087 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 03:35:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 540 transitions. [2018-01-30 03:35:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2018-01-30 03:35:51,089 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:51,089 INFO L350 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:51,089 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:51,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1275109923, now seen corresponding path program 25 times [2018-01-30 03:35:51,089 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:51,089 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:51,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:51,090 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:51,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:51,102 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6250 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2018-01-30 03:35:51,807 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:51,807 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:51,834 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:51,875 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6250 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2018-01-30 03:35:51,970 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:51,971 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-01-30 03:35:51,971 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 03:35:51,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 03:35:51,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-30 03:35:51,971 INFO L87 Difference]: Start difference. First operand 534 states and 540 transitions. Second operand 28 states. [2018-01-30 03:35:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:52,261 INFO L93 Difference]: Finished difference Result 990 states and 1006 transitions. [2018-01-30 03:35:52,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 03:35:52,261 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 528 [2018-01-30 03:35:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:52,262 INFO L225 Difference]: With dead ends: 990 [2018-01-30 03:35:52,262 INFO L226 Difference]: Without dead ends: 564 [2018-01-30 03:35:52,263 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-30 03:35:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2018-01-30 03:35:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 554. [2018-01-30 03:35:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-01-30 03:35:52,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 560 transitions. [2018-01-30 03:35:52,267 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 560 transitions. Word has length 528 [2018-01-30 03:35:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:52,268 INFO L432 AbstractCegarLoop]: Abstraction has 554 states and 560 transitions. [2018-01-30 03:35:52,268 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 03:35:52,268 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 560 transitions. [2018-01-30 03:35:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-01-30 03:35:52,269 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:52,270 INFO L350 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:52,270 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1417903624, now seen corresponding path program 26 times [2018-01-30 03:35:52,270 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:52,270 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:52,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:52,270 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:35:52,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:52,283 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6760 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2018-01-30 03:35:53,202 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:53,202 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:53,206 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:35:53,216 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:53,243 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:53,249 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:53,251 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6760 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2018-01-30 03:35:53,359 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:53,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-01-30 03:35:53,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 03:35:53,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 03:35:53,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-30 03:35:53,360 INFO L87 Difference]: Start difference. First operand 554 states and 560 transitions. Second operand 29 states. [2018-01-30 03:35:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:53,821 INFO L93 Difference]: Finished difference Result 1026 states and 1042 transitions. [2018-01-30 03:35:53,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-30 03:35:53,822 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 548 [2018-01-30 03:35:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:53,823 INFO L225 Difference]: With dead ends: 1026 [2018-01-30 03:35:53,823 INFO L226 Difference]: Without dead ends: 584 [2018-01-30 03:35:53,824 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-30 03:35:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2018-01-30 03:35:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 574. [2018-01-30 03:35:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2018-01-30 03:35:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 580 transitions. [2018-01-30 03:35:53,829 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 580 transitions. Word has length 548 [2018-01-30 03:35:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:53,829 INFO L432 AbstractCegarLoop]: Abstraction has 574 states and 580 transitions. [2018-01-30 03:35:53,829 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 03:35:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 580 transitions. [2018-01-30 03:35:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-01-30 03:35:53,831 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:53,831 INFO L350 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:53,831 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:53,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1453028717, now seen corresponding path program 27 times [2018-01-30 03:35:53,831 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:53,831 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:53,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:53,832 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:53,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:53,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7290 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-01-30 03:35:54,533 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:54,533 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:54,538 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:35:54,569 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,571 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,573 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,575 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,577 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,579 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,584 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,588 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,592 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,598 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,605 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,613 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,623 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,632 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,644 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,659 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,675 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,692 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,713 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,735 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,764 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,791 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,826 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,869 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,915 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:54,964 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:55,020 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:55,078 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:35:55,080 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:55,085 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7290 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-01-30 03:35:55,201 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:55,202 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-01-30 03:35:55,202 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 03:35:55,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 03:35:55,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-30 03:35:55,202 INFO L87 Difference]: Start difference. First operand 574 states and 580 transitions. Second operand 30 states. [2018-01-30 03:35:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:55,905 INFO L93 Difference]: Finished difference Result 1062 states and 1078 transitions. [2018-01-30 03:35:55,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 03:35:55,905 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 568 [2018-01-30 03:35:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:55,906 INFO L225 Difference]: With dead ends: 1062 [2018-01-30 03:35:55,906 INFO L226 Difference]: Without dead ends: 604 [2018-01-30 03:35:55,907 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-30 03:35:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2018-01-30 03:35:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2018-01-30 03:35:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2018-01-30 03:35:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 600 transitions. [2018-01-30 03:35:55,912 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 600 transitions. Word has length 568 [2018-01-30 03:35:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:55,912 INFO L432 AbstractCegarLoop]: Abstraction has 594 states and 600 transitions. [2018-01-30 03:35:55,912 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 03:35:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 600 transitions. [2018-01-30 03:35:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2018-01-30 03:35:55,914 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:55,914 INFO L350 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:55,914 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1776928850, now seen corresponding path program 28 times [2018-01-30 03:35:55,915 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:55,915 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:55,915 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:55,915 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:55,915 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:55,928 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7840 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2018-01-30 03:35:56,648 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:56,648 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:56,653 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:35:56,704 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:35:56,707 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:35:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7840 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2018-01-30 03:35:56,827 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:35:56,827 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-01-30 03:35:56,827 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 03:35:56,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 03:35:56,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-30 03:35:56,828 INFO L87 Difference]: Start difference. First operand 594 states and 600 transitions. Second operand 31 states. [2018-01-30 03:35:57,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:35:57,167 INFO L93 Difference]: Finished difference Result 1098 states and 1114 transitions. [2018-01-30 03:35:57,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 03:35:57,167 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 588 [2018-01-30 03:35:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:35:57,169 INFO L225 Difference]: With dead ends: 1098 [2018-01-30 03:35:57,169 INFO L226 Difference]: Without dead ends: 624 [2018-01-30 03:35:57,169 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-30 03:35:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2018-01-30 03:35:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 614. [2018-01-30 03:35:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2018-01-30 03:35:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 620 transitions. [2018-01-30 03:35:57,174 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 620 transitions. Word has length 588 [2018-01-30 03:35:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:35:57,174 INFO L432 AbstractCegarLoop]: Abstraction has 614 states and 620 transitions. [2018-01-30 03:35:57,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 03:35:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 620 transitions. [2018-01-30 03:35:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-01-30 03:35:57,176 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:35:57,176 INFO L350 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:35:57,176 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:35:57,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1276135753, now seen corresponding path program 29 times [2018-01-30 03:35:57,177 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:35:57,177 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:35:57,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:57,177 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:35:57,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:35:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:35:57,190 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:35:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8410 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2018-01-30 03:35:58,071 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:35:58,071 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:35:58,075 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:35:58,085 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,093 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,095 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,101 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,105 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,108 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,111 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,115 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,120 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,126 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,132 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,140 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,148 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,158 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,169 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,182 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,196 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,213 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,232 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,253 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,277 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,305 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,336 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,456 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:35:58,560 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:02,700 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:02,795 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:02,809 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8410 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2018-01-30 03:36:02,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:02,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-01-30 03:36:02,941 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 03:36:02,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 03:36:02,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 03:36:02,941 INFO L87 Difference]: Start difference. First operand 614 states and 620 transitions. Second operand 32 states. [2018-01-30 03:36:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:03,309 INFO L93 Difference]: Finished difference Result 1134 states and 1150 transitions. [2018-01-30 03:36:03,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-30 03:36:03,309 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 608 [2018-01-30 03:36:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:03,311 INFO L225 Difference]: With dead ends: 1134 [2018-01-30 03:36:03,311 INFO L226 Difference]: Without dead ends: 644 [2018-01-30 03:36:03,311 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 03:36:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-01-30 03:36:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 634. [2018-01-30 03:36:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2018-01-30 03:36:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 640 transitions. [2018-01-30 03:36:03,316 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 640 transitions. Word has length 608 [2018-01-30 03:36:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:03,316 INFO L432 AbstractCegarLoop]: Abstraction has 634 states and 640 transitions. [2018-01-30 03:36:03,316 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 03:36:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 640 transitions. [2018-01-30 03:36:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-01-30 03:36:03,318 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:03,318 INFO L350 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:03,318 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1207009124, now seen corresponding path program 30 times [2018-01-30 03:36:03,319 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:03,319 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:03,319 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:03,319 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:03,319 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:03,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2018-01-30 03:36:04,136 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:04,136 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:04,141 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:36:04,152 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,166 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,186 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,193 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,206 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,213 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,223 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,229 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,233 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,240 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,244 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,250 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,255 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,262 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,276 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,285 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,296 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,306 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,319 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,331 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,345 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,359 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,374 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,396 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,415 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,436 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,461 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,489 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:04,570 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:04,576 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2018-01-30 03:36:04,706 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:04,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-01-30 03:36:04,706 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 03:36:04,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 03:36:04,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 03:36:04,707 INFO L87 Difference]: Start difference. First operand 634 states and 640 transitions. Second operand 33 states. [2018-01-30 03:36:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:05,031 INFO L93 Difference]: Finished difference Result 1170 states and 1186 transitions. [2018-01-30 03:36:05,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 03:36:05,031 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 628 [2018-01-30 03:36:05,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:05,032 INFO L225 Difference]: With dead ends: 1170 [2018-01-30 03:36:05,032 INFO L226 Difference]: Without dead ends: 664 [2018-01-30 03:36:05,033 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 03:36:05,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2018-01-30 03:36:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 654. [2018-01-30 03:36:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2018-01-30 03:36:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 660 transitions. [2018-01-30 03:36:05,039 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 660 transitions. Word has length 628 [2018-01-30 03:36:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:05,039 INFO L432 AbstractCegarLoop]: Abstraction has 654 states and 660 transitions. [2018-01-30 03:36:05,039 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 03:36:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 660 transitions. [2018-01-30 03:36:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-01-30 03:36:05,041 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:05,041 INFO L350 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:05,041 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:05,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1484298751, now seen corresponding path program 31 times [2018-01-30 03:36:05,042 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:05,042 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:05,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:05,042 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:05,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:05,055 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9610 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2018-01-30 03:36:05,890 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:05,890 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:05,895 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:36:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:05,946 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9610 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2018-01-30 03:36:06,081 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:06,081 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-01-30 03:36:06,081 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 03:36:06,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 03:36:06,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 03:36:06,082 INFO L87 Difference]: Start difference. First operand 654 states and 660 transitions. Second operand 34 states. [2018-01-30 03:36:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:06,474 INFO L93 Difference]: Finished difference Result 1206 states and 1222 transitions. [2018-01-30 03:36:06,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 03:36:06,474 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 648 [2018-01-30 03:36:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:06,475 INFO L225 Difference]: With dead ends: 1206 [2018-01-30 03:36:06,475 INFO L226 Difference]: Without dead ends: 684 [2018-01-30 03:36:06,476 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 03:36:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2018-01-30 03:36:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 674. [2018-01-30 03:36:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2018-01-30 03:36:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 680 transitions. [2018-01-30 03:36:06,481 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 680 transitions. Word has length 648 [2018-01-30 03:36:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:06,481 INFO L432 AbstractCegarLoop]: Abstraction has 674 states and 680 transitions. [2018-01-30 03:36:06,481 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 03:36:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 680 transitions. [2018-01-30 03:36:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2018-01-30 03:36:06,484 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:06,485 INFO L350 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:06,485 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:06,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1317296410, now seen corresponding path program 32 times [2018-01-30 03:36:06,485 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:06,485 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:06,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:06,486 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:36:06,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:06,498 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10240 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2018-01-30 03:36:07,385 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:07,386 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:07,390 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:36:07,402 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:07,434 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:07,439 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:07,442 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10240 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2018-01-30 03:36:07,583 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:07,584 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-01-30 03:36:07,584 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 03:36:07,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 03:36:07,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 03:36:07,585 INFO L87 Difference]: Start difference. First operand 674 states and 680 transitions. Second operand 35 states. [2018-01-30 03:36:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:08,072 INFO L93 Difference]: Finished difference Result 1242 states and 1258 transitions. [2018-01-30 03:36:08,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-30 03:36:08,072 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 668 [2018-01-30 03:36:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:08,074 INFO L225 Difference]: With dead ends: 1242 [2018-01-30 03:36:08,074 INFO L226 Difference]: Without dead ends: 704 [2018-01-30 03:36:08,074 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 03:36:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-01-30 03:36:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 694. [2018-01-30 03:36:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2018-01-30 03:36:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 700 transitions. [2018-01-30 03:36:08,079 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 700 transitions. Word has length 668 [2018-01-30 03:36:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:08,079 INFO L432 AbstractCegarLoop]: Abstraction has 694 states and 700 transitions. [2018-01-30 03:36:08,079 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 03:36:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 700 transitions. [2018-01-30 03:36:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-01-30 03:36:08,082 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:08,083 INFO L350 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:08,083 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:08,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1391231819, now seen corresponding path program 33 times [2018-01-30 03:36:08,083 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:08,083 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:08,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:08,083 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:08,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:08,096 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10890 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2018-01-30 03:36:09,040 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:09,040 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:09,044 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:36:09,057 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,059 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,061 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,062 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,065 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,067 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,072 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,077 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,081 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,087 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,093 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,102 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,110 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,120 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,133 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,147 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,166 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,182 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,202 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,228 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,254 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,318 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,359 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,401 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,450 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,511 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,570 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,639 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,708 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,787 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,887 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:09,987 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:10,091 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:36:10,094 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:10,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10890 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2018-01-30 03:36:10,242 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:10,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-01-30 03:36:10,243 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 03:36:10,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 03:36:10,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 03:36:10,243 INFO L87 Difference]: Start difference. First operand 694 states and 700 transitions. Second operand 36 states. [2018-01-30 03:36:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:10,658 INFO L93 Difference]: Finished difference Result 1278 states and 1294 transitions. [2018-01-30 03:36:10,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 03:36:10,658 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 688 [2018-01-30 03:36:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:10,659 INFO L225 Difference]: With dead ends: 1278 [2018-01-30 03:36:10,659 INFO L226 Difference]: Without dead ends: 724 [2018-01-30 03:36:10,660 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 03:36:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2018-01-30 03:36:10,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 714. [2018-01-30 03:36:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2018-01-30 03:36:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 720 transitions. [2018-01-30 03:36:10,664 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 720 transitions. Word has length 688 [2018-01-30 03:36:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:10,664 INFO L432 AbstractCegarLoop]: Abstraction has 714 states and 720 transitions. [2018-01-30 03:36:10,664 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 03:36:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 720 transitions. [2018-01-30 03:36:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2018-01-30 03:36:10,667 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:10,667 INFO L350 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:10,667 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:10,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1497679056, now seen corresponding path program 34 times [2018-01-30 03:36:10,667 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:10,667 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:10,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:10,668 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:10,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:10,680 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11560 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2018-01-30 03:36:11,665 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:11,665 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:11,670 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:36:11,723 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:11,726 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11560 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2018-01-30 03:36:11,871 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:11,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-30 03:36:11,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 03:36:11,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 03:36:11,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 03:36:11,872 INFO L87 Difference]: Start difference. First operand 714 states and 720 transitions. Second operand 37 states. [2018-01-30 03:36:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:12,322 INFO L93 Difference]: Finished difference Result 1314 states and 1330 transitions. [2018-01-30 03:36:12,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-30 03:36:12,322 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 708 [2018-01-30 03:36:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:12,324 INFO L225 Difference]: With dead ends: 1314 [2018-01-30 03:36:12,324 INFO L226 Difference]: Without dead ends: 744 [2018-01-30 03:36:12,325 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 03:36:12,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-01-30 03:36:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 734. [2018-01-30 03:36:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2018-01-30 03:36:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 740 transitions. [2018-01-30 03:36:12,330 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 740 transitions. Word has length 708 [2018-01-30 03:36:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:12,330 INFO L432 AbstractCegarLoop]: Abstraction has 734 states and 740 transitions. [2018-01-30 03:36:12,330 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 03:36:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 740 transitions. [2018-01-30 03:36:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-01-30 03:36:12,333 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:12,333 INFO L350 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:12,333 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:12,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1247211883, now seen corresponding path program 35 times [2018-01-30 03:36:12,334 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:12,334 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:12,334 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:12,334 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:12,334 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:12,347 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12250 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2018-01-30 03:36:13,429 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:13,429 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:13,434 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:36:13,445 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,447 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,449 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,453 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,455 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,462 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,471 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,476 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,483 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,490 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,499 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,508 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,519 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,533 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,547 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,564 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,582 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,604 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,628 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,688 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,724 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,764 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,808 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,912 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:13,973 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:14,041 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:14,117 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:14,202 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:14,294 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:14,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:26,467 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:26,473 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:26,483 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12250 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2018-01-30 03:36:26,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:26,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-01-30 03:36:26,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-30 03:36:26,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-30 03:36:26,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 03:36:26,658 INFO L87 Difference]: Start difference. First operand 734 states and 740 transitions. Second operand 38 states. [2018-01-30 03:36:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:27,070 INFO L93 Difference]: Finished difference Result 1350 states and 1366 transitions. [2018-01-30 03:36:27,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-30 03:36:27,070 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 728 [2018-01-30 03:36:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:27,072 INFO L225 Difference]: With dead ends: 1350 [2018-01-30 03:36:27,072 INFO L226 Difference]: Without dead ends: 764 [2018-01-30 03:36:27,072 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 03:36:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-01-30 03:36:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 754. [2018-01-30 03:36:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-01-30 03:36:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 760 transitions. [2018-01-30 03:36:27,077 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 760 transitions. Word has length 728 [2018-01-30 03:36:27,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:27,077 INFO L432 AbstractCegarLoop]: Abstraction has 754 states and 760 transitions. [2018-01-30 03:36:27,077 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-30 03:36:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 760 transitions. [2018-01-30 03:36:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-01-30 03:36:27,080 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:27,080 INFO L350 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:27,080 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:27,080 INFO L82 PathProgramCache]: Analyzing trace with hash -967361158, now seen corresponding path program 36 times [2018-01-30 03:36:27,080 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:27,080 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:27,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:27,081 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:27,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:27,094 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2018-01-30 03:36:28,262 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:28,262 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:28,266 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:36:28,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,280 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,284 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,286 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,294 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,297 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,301 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,307 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,310 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,317 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,323 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,330 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,338 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,345 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,352 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,362 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,372 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,384 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,398 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,416 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,429 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,444 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,461 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,479 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,503 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,528 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,554 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,646 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,679 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,724 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,765 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,875 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:36:28,878 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:28,885 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2018-01-30 03:36:29,052 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:29,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-01-30 03:36:29,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 03:36:29,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 03:36:29,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 03:36:29,053 INFO L87 Difference]: Start difference. First operand 754 states and 760 transitions. Second operand 39 states. [2018-01-30 03:36:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:30,135 INFO L93 Difference]: Finished difference Result 1386 states and 1402 transitions. [2018-01-30 03:36:30,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 03:36:30,135 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 748 [2018-01-30 03:36:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:30,137 INFO L225 Difference]: With dead ends: 1386 [2018-01-30 03:36:30,137 INFO L226 Difference]: Without dead ends: 784 [2018-01-30 03:36:30,138 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 03:36:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2018-01-30 03:36:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 774. [2018-01-30 03:36:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2018-01-30 03:36:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 780 transitions. [2018-01-30 03:36:30,142 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 780 transitions. Word has length 748 [2018-01-30 03:36:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:30,142 INFO L432 AbstractCegarLoop]: Abstraction has 774 states and 780 transitions. [2018-01-30 03:36:30,142 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 03:36:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 780 transitions. [2018-01-30 03:36:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-01-30 03:36:30,145 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:30,145 INFO L350 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:30,145 INFO L371 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:30,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1387853857, now seen corresponding path program 37 times [2018-01-30 03:36:30,146 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:30,146 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:30,146 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:30,146 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:30,146 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:30,159 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2018-01-30 03:36:31,441 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:31,441 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:31,446 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:36:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:31,503 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2018-01-30 03:36:31,679 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:31,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-01-30 03:36:31,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-30 03:36:31,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-30 03:36:31,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 03:36:31,680 INFO L87 Difference]: Start difference. First operand 774 states and 780 transitions. Second operand 40 states. [2018-01-30 03:36:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:32,225 INFO L93 Difference]: Finished difference Result 1422 states and 1438 transitions. [2018-01-30 03:36:32,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 03:36:32,225 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 768 [2018-01-30 03:36:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:32,227 INFO L225 Difference]: With dead ends: 1422 [2018-01-30 03:36:32,227 INFO L226 Difference]: Without dead ends: 804 [2018-01-30 03:36:32,227 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 03:36:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2018-01-30 03:36:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 794. [2018-01-30 03:36:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2018-01-30 03:36:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 800 transitions. [2018-01-30 03:36:32,232 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 800 transitions. Word has length 768 [2018-01-30 03:36:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:32,232 INFO L432 AbstractCegarLoop]: Abstraction has 794 states and 800 transitions. [2018-01-30 03:36:32,232 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-30 03:36:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 800 transitions. [2018-01-30 03:36:32,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-01-30 03:36:32,236 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:32,236 INFO L350 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:32,236 INFO L371 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:32,236 INFO L82 PathProgramCache]: Analyzing trace with hash 484027844, now seen corresponding path program 38 times [2018-01-30 03:36:32,236 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:32,236 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:32,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:32,237 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:36:32,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:32,250 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:36:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 14440 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2018-01-30 03:36:33,537 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:36:33,537 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:36:33,541 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:36:33,554 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:33,592 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:36:33,599 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:36:33,603 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:36:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14440 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2018-01-30 03:36:33,797 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:36:33,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-01-30 03:36:33,798 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-30 03:36:33,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-30 03:36:33,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 03:36:33,798 INFO L87 Difference]: Start difference. First operand 794 states and 800 transitions. Second operand 41 states. [2018-01-30 03:36:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:36:34,326 INFO L93 Difference]: Finished difference Result 1458 states and 1474 transitions. [2018-01-30 03:36:34,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 03:36:34,326 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 788 [2018-01-30 03:36:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:36:34,327 INFO L225 Difference]: With dead ends: 1458 [2018-01-30 03:36:34,327 INFO L226 Difference]: Without dead ends: 824 [2018-01-30 03:36:34,328 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 03:36:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2018-01-30 03:36:34,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 814. [2018-01-30 03:36:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2018-01-30 03:36:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 820 transitions. [2018-01-30 03:36:34,333 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 820 transitions. Word has length 788 [2018-01-30 03:36:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:36:34,333 INFO L432 AbstractCegarLoop]: Abstraction has 814 states and 820 transitions. [2018-01-30 03:36:34,333 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-30 03:36:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 820 transitions. [2018-01-30 03:36:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-01-30 03:36:34,336 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:36:34,336 INFO L350 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:36:34,337 INFO L371 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:36:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash -179278039, now seen corresponding path program 39 times [2018-01-30 03:36:34,337 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:36:34,337 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:36:34,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:34,337 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:36:34,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:36:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:36:34,351 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-30 03:36:35,147 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:396) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) 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:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-30 03:36:35,150 INFO L168 Benchmark]: Toolchain (without parser) took 70422.22 ms. Allocated memory was 149.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 114.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-01-30 03:36:35,151 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 149.4 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 03:36:35,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 109.41 ms. Allocated memory is still 149.4 MB. Free memory was 114.4 MB in the beginning and 106.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. [2018-01-30 03:36:35,151 INFO L168 Benchmark]: Boogie Preprocessor took 17.22 ms. Allocated memory is still 149.4 MB. Free memory was 106.1 MB in the beginning and 104.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-30 03:36:35,151 INFO L168 Benchmark]: RCFGBuilder took 277.95 ms. Allocated memory is still 149.4 MB. Free memory was 104.4 MB in the beginning and 91.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. [2018-01-30 03:36:35,151 INFO L168 Benchmark]: IcfgTransformer took 12.12 ms. Allocated memory is still 149.4 MB. Free memory was 91.2 MB in the beginning and 89.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-01-30 03:36:35,151 INFO L168 Benchmark]: TraceAbstraction took 70003.16 ms. Allocated memory was 149.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 89.5 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. [2018-01-30 03:36:35,153 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 149.4 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 109.41 ms. Allocated memory is still 149.4 MB. Free memory was 114.4 MB in the beginning and 106.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.22 ms. Allocated memory is still 149.4 MB. Free memory was 106.1 MB in the beginning and 104.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 277.95 ms. Allocated memory is still 149.4 MB. Free memory was 104.4 MB in the beginning and 91.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. * IcfgTransformer took 12.12 ms. Allocated memory is still 149.4 MB. Free memory was 91.2 MB in the beginning and 89.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 70003.16 ms. Allocated memory was 149.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 89.5 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_init5_true-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_03-36-35-157.csv Completed graceful shutdown