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_init7_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 02:55:22,580 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 02:55:22,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 02:55:22,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 02:55:22,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 02:55:22,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 02:55:22,595 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 02:55:22,597 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 02:55:22,598 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 02:55:22,598 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 02:55:22,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 02:55:22,599 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 02:55:22,600 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 02:55:22,600 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 02:55:22,601 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 02:55:22,603 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 02:55:22,604 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 02:55:22,605 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 02:55:22,605 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 02:55:22,606 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 02:55:22,607 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 02:55:22,615 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 02:55:22,632 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 02:55:22,632 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 02:55:22,633 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 02:55:22,633 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 02:55:22,633 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 02:55:22,633 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 02:55:22,633 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 02:55:22,634 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 02:55:22,634 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 02:55:22,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 02:55:22,635 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 02:55:22,635 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 02:55:22,636 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 02:55:22,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 02:55:22,636 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 02:55:22,636 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 02:55:22,636 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 02:55:22,662 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 02:55:22,668 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 02:55:22,670 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 02:55:22,671 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 02:55:22,671 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 02:55:22,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_false-unreach-call_ground.i [2018-01-30 02:55:22,740 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 02:55:22,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 02:55:22,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 02:55:22,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 02:55:22,745 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 02:55:22,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21078be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22, skipping insertion in model container [2018-01-30 02:55:22,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,757 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:55:22,770 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:55:22,851 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:55:22,864 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:55:22,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22 WrapperNode [2018-01-30 02:55:22,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 02:55:22,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 02:55:22,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 02:55:22,868 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 02:55:22,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (1/1) ... [2018-01-30 02:55:22,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 02:55:22,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 02:55:22,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 02:55:22,889 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 02:55:22,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (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 02:55:22,927 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 02:55:22,928 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 02:55:22,928 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 02:55:22,928 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 02:55:22,928 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 02:55:22,928 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 02:55:22,928 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 02:55:22,928 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 02:55:22,928 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 02:55:23,243 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 02:55:23,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:55:23 BoogieIcfgContainer [2018-01-30 02:55:23,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 02:55:23,243 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 02:55:23,243 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 02:55:23,244 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 02:55:23,246 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:55:23" (1/1) ... [2018-01-30 02:55:23,248 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 02:55:23,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:55:23 BasicIcfg [2018-01-30 02:55:23,255 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 02:55:23,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 02:55:23,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 02:55:23,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 02:55:23,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:55:22" (1/4) ... [2018-01-30 02:55:23,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62547fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:55:23, skipping insertion in model container [2018-01-30 02:55:23,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:55:22" (2/4) ... [2018-01-30 02:55:23,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62547fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:55:23, skipping insertion in model container [2018-01-30 02:55:23,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:55:23" (3/4) ... [2018-01-30 02:55:23,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62547fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:55:23, skipping insertion in model container [2018-01-30 02:55:23,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:55:23" (4/4) ... [2018-01-30 02:55:23,259 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_init7_false-unreach-call_ground.ileft_unchanged_by_heapseparator [2018-01-30 02:55:23,264 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 02:55:23,268 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 02:55:23,292 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 02:55:23,292 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 02:55:23,292 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 02:55:23,292 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 02:55:23,292 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 02:55:23,292 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 02:55:23,292 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 02:55:23,292 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 02:55:23,293 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 02:55:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-01-30 02:55:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-30 02:55:23,305 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:23,306 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] [2018-01-30 02:55:23,306 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash 530882183, now seen corresponding path program 1 times [2018-01-30 02:55:23,310 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:23,310 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:23,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:23,338 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:23,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:23,358 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:23,375 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 02:55:23,376 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:55:23,377 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 02:55:23,378 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 02:55:23,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 02:55:23,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 02:55:23,386 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-01-30 02:55:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:23,401 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2018-01-30 02:55:23,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 02:55:23,402 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-30 02:55:23,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:23,407 INFO L225 Difference]: With dead ends: 108 [2018-01-30 02:55:23,407 INFO L226 Difference]: Without dead ends: 54 [2018-01-30 02:55:23,409 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 02:55:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-30 02:55:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-01-30 02:55:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-30 02:55:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-01-30 02:55:23,431 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 27 [2018-01-30 02:55:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:23,431 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-01-30 02:55:23,431 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 02:55:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-01-30 02:55:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-30 02:55:23,442 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:23,442 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, 1, 1, 1, 1, 1, 1] [2018-01-30 02:55:23,442 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:23,443 INFO L82 PathProgramCache]: Analyzing trace with hash 497413823, now seen corresponding path program 1 times [2018-01-30 02:55:23,443 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:23,443 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:23,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:23,444 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:23,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:23,448 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:23,504 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 02:55:23,504 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:55:23,504 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:55:23,505 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:55:23,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:55:23,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:55:23,506 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 3 states. [2018-01-30 02:55:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:23,813 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2018-01-30 02:55:23,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:55:23,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-01-30 02:55:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:23,814 INFO L225 Difference]: With dead ends: 126 [2018-01-30 02:55:23,814 INFO L226 Difference]: Without dead ends: 82 [2018-01-30 02:55:23,815 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 02:55:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-01-30 02:55:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2018-01-30 02:55:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-30 02:55:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2018-01-30 02:55:23,820 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 34 [2018-01-30 02:55:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:23,820 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2018-01-30 02:55:23,820 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:55:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2018-01-30 02:55:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-30 02:55:23,821 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:23,821 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:55:23,821 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:23,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2118001788, now seen corresponding path program 1 times [2018-01-30 02:55:23,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:23,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:23,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:23,822 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:23,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:23,833 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-30 02:55:23,891 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:23,891 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 02:55:23,919 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:23,938 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-30 02:55:23,969 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:23,969 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-01-30 02:55:23,969 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 02:55:23,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 02:55:23,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 02:55:23,970 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 4 states. [2018-01-30 02:55:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:24,170 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2018-01-30 02:55:24,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 02:55:24,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-01-30 02:55:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:24,171 INFO L225 Difference]: With dead ends: 166 [2018-01-30 02:55:24,171 INFO L226 Difference]: Without dead ends: 110 [2018-01-30 02:55:24,172 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 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 02:55:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-01-30 02:55:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2018-01-30 02:55:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-30 02:55:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2018-01-30 02:55:24,177 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 62 [2018-01-30 02:55:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:24,177 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2018-01-30 02:55:24,177 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 02:55:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2018-01-30 02:55:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-01-30 02:55:24,179 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:24,179 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 02:55:24,179 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash -390316343, now seen corresponding path program 2 times [2018-01-30 02:55:24,179 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:24,179 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:24,180 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:24,180 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:24,180 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:24,197 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-30 02:55:24,249 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:24,249 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 02:55:24,268 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:55:24,281 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:24,295 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:24,305 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:24,307 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-30 02:55:24,338 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:24,338 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:55:24,339 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:55:24,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:55:24,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:55:24,339 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 5 states. [2018-01-30 02:55:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:24,666 INFO L93 Difference]: Finished difference Result 218 states and 240 transitions. [2018-01-30 02:55:24,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-30 02:55:24,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-01-30 02:55:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:24,667 INFO L225 Difference]: With dead ends: 218 [2018-01-30 02:55:24,668 INFO L226 Difference]: Without dead ends: 138 [2018-01-30 02:55:24,668 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 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 02:55:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-30 02:55:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2018-01-30 02:55:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-01-30 02:55:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2018-01-30 02:55:24,675 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 90 [2018-01-30 02:55:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:24,675 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2018-01-30 02:55:24,675 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:55:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2018-01-30 02:55:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-30 02:55:24,676 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:24,677 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 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 02:55:24,677 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:24,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1454581618, now seen corresponding path program 3 times [2018-01-30 02:55:24,677 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:24,677 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:24,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:24,678 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:24,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:24,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-01-30 02:55:24,827 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:24,828 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:55:24,835 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:55:24,846 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:24,860 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:24,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:24,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:24,878 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:24,881 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-01-30 02:55:24,912 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:24,912 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-30 02:55:24,913 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 02:55:24,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 02:55:24,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 02:55:24,913 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand 6 states. [2018-01-30 02:55:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:25,238 INFO L93 Difference]: Finished difference Result 270 states and 292 transitions. [2018-01-30 02:55:25,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:55:25,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-01-30 02:55:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:25,239 INFO L225 Difference]: With dead ends: 270 [2018-01-30 02:55:25,239 INFO L226 Difference]: Without dead ends: 166 [2018-01-30 02:55:25,240 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 02:55:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-30 02:55:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2018-01-30 02:55:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-30 02:55:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2018-01-30 02:55:25,246 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 118 [2018-01-30 02:55:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:25,246 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2018-01-30 02:55:25,246 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 02:55:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2018-01-30 02:55:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-01-30 02:55:25,247 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:25,247 INFO L350 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2018-01-30 02:55:25,247 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1615554771, now seen corresponding path program 4 times [2018-01-30 02:55:25,248 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:25,248 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:25,248 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:25,248 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:25,248 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:25,264 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-01-30 02:55:25,367 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:25,367 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 02:55:25,376 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:55:25,403 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:25,405 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-01-30 02:55:25,443 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:25,444 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 02:55:25,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 02:55:25,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 02:55:25,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:55:25,444 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand 7 states. [2018-01-30 02:55:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:25,665 INFO L93 Difference]: Finished difference Result 322 states and 344 transitions. [2018-01-30 02:55:25,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 02:55:25,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2018-01-30 02:55:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:25,669 INFO L225 Difference]: With dead ends: 322 [2018-01-30 02:55:25,670 INFO L226 Difference]: Without dead ends: 194 [2018-01-30 02:55:25,670 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 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 02:55:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-30 02:55:25,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 180. [2018-01-30 02:55:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-30 02:55:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 188 transitions. [2018-01-30 02:55:25,692 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 188 transitions. Word has length 146 [2018-01-30 02:55:25,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:25,692 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 188 transitions. [2018-01-30 02:55:25,692 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 02:55:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 188 transitions. [2018-01-30 02:55:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-30 02:55:25,694 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:25,694 INFO L350 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1] [2018-01-30 02:55:25,697 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1622126488, now seen corresponding path program 5 times [2018-01-30 02:55:25,697 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:25,697 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:25,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:25,698 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:25,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:25,718 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-01-30 02:55:26,022 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:26,022 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 02:55:26,027 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:55:26,040 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:26,049 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:26,059 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:26,070 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:26,087 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:26,112 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:26,125 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:26,130 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-01-30 02:55:26,162 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:26,162 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-01-30 02:55:26,162 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-30 02:55:26,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-30 02:55:26,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 02:55:26,163 INFO L87 Difference]: Start difference. First operand 180 states and 188 transitions. Second operand 8 states. [2018-01-30 02:55:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:26,401 INFO L93 Difference]: Finished difference Result 374 states and 396 transitions. [2018-01-30 02:55:26,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 02:55:26,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2018-01-30 02:55:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:26,402 INFO L225 Difference]: With dead ends: 374 [2018-01-30 02:55:26,402 INFO L226 Difference]: Without dead ends: 222 [2018-01-30 02:55:26,402 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 02:55:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-30 02:55:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 208. [2018-01-30 02:55:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-30 02:55:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 216 transitions. [2018-01-30 02:55:26,410 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 216 transitions. Word has length 174 [2018-01-30 02:55:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:26,410 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 216 transitions. [2018-01-30 02:55:26,410 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-30 02:55:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 216 transitions. [2018-01-30 02:55:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-01-30 02:55:26,411 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:26,412 INFO L350 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1] [2018-01-30 02:55:26,412 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:26,412 INFO L82 PathProgramCache]: Analyzing trace with hash 596733149, now seen corresponding path program 6 times [2018-01-30 02:55:26,412 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:26,412 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:26,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:26,413 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:26,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:26,426 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2018-01-30 02:55:26,606 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:26,606 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 02:55:26,611 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:55:26,620 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:26,629 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:26,631 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:26,643 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:26,646 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:26,649 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:26,654 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:26,654 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:26,657 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2018-01-30 02:55:26,689 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:26,690 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 02:55:26,690 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:55:26,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:55:26,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:55:26,690 INFO L87 Difference]: Start difference. First operand 208 states and 216 transitions. Second operand 9 states. [2018-01-30 02:55:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:26,916 INFO L93 Difference]: Finished difference Result 426 states and 448 transitions. [2018-01-30 02:55:26,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 02:55:26,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2018-01-30 02:55:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:26,917 INFO L225 Difference]: With dead ends: 426 [2018-01-30 02:55:26,917 INFO L226 Difference]: Without dead ends: 250 [2018-01-30 02:55:26,917 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:55:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-01-30 02:55:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 236. [2018-01-30 02:55:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-01-30 02:55:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 244 transitions. [2018-01-30 02:55:26,921 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 244 transitions. Word has length 202 [2018-01-30 02:55:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:26,921 INFO L432 AbstractCegarLoop]: Abstraction has 236 states and 244 transitions. [2018-01-30 02:55:26,921 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:55:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 244 transitions. [2018-01-30 02:55:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-01-30 02:55:26,923 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:26,923 INFO L350 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1] [2018-01-30 02:55:26,923 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:26,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1205313374, now seen corresponding path program 7 times [2018-01-30 02:55:26,924 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:26,924 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:26,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:26,924 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:26,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:26,936 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2018-01-30 02:55:27,046 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:27,046 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 02:55:27,050 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:27,075 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2018-01-30 02:55:27,110 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:27,110 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-01-30 02:55:27,111 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 02:55:27,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 02:55:27,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:55:27,111 INFO L87 Difference]: Start difference. First operand 236 states and 244 transitions. Second operand 10 states. [2018-01-30 02:55:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:27,316 INFO L93 Difference]: Finished difference Result 478 states and 500 transitions. [2018-01-30 02:55:27,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-30 02:55:27,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 230 [2018-01-30 02:55:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:27,317 INFO L225 Difference]: With dead ends: 478 [2018-01-30 02:55:27,317 INFO L226 Difference]: Without dead ends: 278 [2018-01-30 02:55:27,317 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:55:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-01-30 02:55:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 264. [2018-01-30 02:55:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-01-30 02:55:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 272 transitions. [2018-01-30 02:55:27,321 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 272 transitions. Word has length 230 [2018-01-30 02:55:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:27,321 INFO L432 AbstractCegarLoop]: Abstraction has 264 states and 272 transitions. [2018-01-30 02:55:27,321 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 02:55:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 272 transitions. [2018-01-30 02:55:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-01-30 02:55:27,323 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:27,323 INFO L350 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1] [2018-01-30 02:55:27,323 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash 869026535, now seen corresponding path program 8 times [2018-01-30 02:55:27,324 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:27,324 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:27,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:27,324 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:27,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:27,338 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-01-30 02:55:27,472 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:27,472 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 02:55:27,478 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:55:27,485 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:27,498 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:27,500 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:27,503 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-01-30 02:55:27,566 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:27,566 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-30 02:55:27,566 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 02:55:27,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 02:55:27,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:55:27,567 INFO L87 Difference]: Start difference. First operand 264 states and 272 transitions. Second operand 11 states. [2018-01-30 02:55:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:27,943 INFO L93 Difference]: Finished difference Result 530 states and 552 transitions. [2018-01-30 02:55:27,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-30 02:55:27,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2018-01-30 02:55:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:27,944 INFO L225 Difference]: With dead ends: 530 [2018-01-30 02:55:27,944 INFO L226 Difference]: Without dead ends: 306 [2018-01-30 02:55:27,944 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:55:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-01-30 02:55:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 292. [2018-01-30 02:55:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-01-30 02:55:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 300 transitions. [2018-01-30 02:55:27,952 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 300 transitions. Word has length 258 [2018-01-30 02:55:27,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:27,952 INFO L432 AbstractCegarLoop]: Abstraction has 292 states and 300 transitions. [2018-01-30 02:55:27,952 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 02:55:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 300 transitions. [2018-01-30 02:55:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-30 02:55:27,953 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:27,953 INFO L350 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1] [2018-01-30 02:55:27,953 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:27,953 INFO L82 PathProgramCache]: Analyzing trace with hash 569699244, now seen corresponding path program 9 times [2018-01-30 02:55:27,954 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:27,954 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:27,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:27,954 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:27,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:27,968 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2018-01-30 02:55:28,325 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:28,325 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 02:55:28,329 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:55:28,338 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,341 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,344 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,346 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,349 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,352 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,360 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,367 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,375 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,383 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:28,383 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:28,386 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2018-01-30 02:55:28,436 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:28,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-01-30 02:55:28,436 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:55:28,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:55:28,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:55:28,437 INFO L87 Difference]: Start difference. First operand 292 states and 300 transitions. Second operand 12 states. [2018-01-30 02:55:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:29,039 INFO L93 Difference]: Finished difference Result 582 states and 604 transitions. [2018-01-30 02:55:29,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 02:55:29,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2018-01-30 02:55:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:29,041 INFO L225 Difference]: With dead ends: 582 [2018-01-30 02:55:29,041 INFO L226 Difference]: Without dead ends: 334 [2018-01-30 02:55:29,041 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:55:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-30 02:55:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 320. [2018-01-30 02:55:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-01-30 02:55:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 328 transitions. [2018-01-30 02:55:29,046 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 328 transitions. Word has length 286 [2018-01-30 02:55:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:29,046 INFO L432 AbstractCegarLoop]: Abstraction has 320 states and 328 transitions. [2018-01-30 02:55:29,046 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:55:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 328 transitions. [2018-01-30 02:55:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-01-30 02:55:29,047 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:29,047 INFO L350 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1] [2018-01-30 02:55:29,047 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:29,047 INFO L82 PathProgramCache]: Analyzing trace with hash -197524751, now seen corresponding path program 10 times [2018-01-30 02:55:29,047 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:29,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:29,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:29,048 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:29,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:29,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2018-01-30 02:55:29,219 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:29,220 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 02:55:29,224 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:55:29,256 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:29,260 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2018-01-30 02:55:29,323 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:29,323 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 02:55:29,323 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 02:55:29,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 02:55:29,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:55:29,324 INFO L87 Difference]: Start difference. First operand 320 states and 328 transitions. Second operand 13 states. [2018-01-30 02:55:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:29,588 INFO L93 Difference]: Finished difference Result 634 states and 656 transitions. [2018-01-30 02:55:29,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:55:29,589 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 314 [2018-01-30 02:55:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:29,590 INFO L225 Difference]: With dead ends: 634 [2018-01-30 02:55:29,590 INFO L226 Difference]: Without dead ends: 362 [2018-01-30 02:55:29,590 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 315 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 02:55:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-30 02:55:29,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 348. [2018-01-30 02:55:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-01-30 02:55:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 356 transitions. [2018-01-30 02:55:29,594 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 356 transitions. Word has length 314 [2018-01-30 02:55:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:29,594 INFO L432 AbstractCegarLoop]: Abstraction has 348 states and 356 transitions. [2018-01-30 02:55:29,594 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 02:55:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 356 transitions. [2018-01-30 02:55:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-01-30 02:55:29,595 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:29,595 INFO L350 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1] [2018-01-30 02:55:29,595 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:29,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1918062774, now seen corresponding path program 11 times [2018-01-30 02:55:29,596 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:29,596 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:29,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:29,596 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:29,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:29,608 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 02:55:30,104 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:30,104 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 02:55:30,109 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:55:30,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,133 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,146 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,149 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,152 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,156 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,160 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,164 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,170 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,177 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:30,184 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:31,185 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:31,189 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:31,193 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 02:55:31,254 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:31,255 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-01-30 02:55:31,255 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 02:55:31,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 02:55:31,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-30 02:55:31,255 INFO L87 Difference]: Start difference. First operand 348 states and 356 transitions. Second operand 14 states. [2018-01-30 02:55:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:31,504 INFO L93 Difference]: Finished difference Result 686 states and 708 transitions. [2018-01-30 02:55:31,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-30 02:55:31,504 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 342 [2018-01-30 02:55:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:31,505 INFO L225 Difference]: With dead ends: 686 [2018-01-30 02:55:31,505 INFO L226 Difference]: Without dead ends: 390 [2018-01-30 02:55:31,506 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 343 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 02:55:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-01-30 02:55:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 376. [2018-01-30 02:55:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-01-30 02:55:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 384 transitions. [2018-01-30 02:55:31,510 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 384 transitions. Word has length 342 [2018-01-30 02:55:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:31,510 INFO L432 AbstractCegarLoop]: Abstraction has 376 states and 384 transitions. [2018-01-30 02:55:31,510 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 02:55:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 384 transitions. [2018-01-30 02:55:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-01-30 02:55:31,511 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:31,511 INFO L350 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1] [2018-01-30 02:55:31,512 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash 706254075, now seen corresponding path program 12 times [2018-01-30 02:55:31,512 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:31,512 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:31,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:31,512 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:31,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:31,524 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-01-30 02:55:32,509 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:32,509 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 02:55:32,513 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:55:32,522 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,524 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,526 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,529 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,531 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,534 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,537 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,542 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,546 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,551 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,560 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,566 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,582 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:32,583 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:32,586 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-01-30 02:55:32,643 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:32,643 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 02:55:32,643 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 02:55:32,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 02:55:32,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:55:32,644 INFO L87 Difference]: Start difference. First operand 376 states and 384 transitions. Second operand 15 states. [2018-01-30 02:55:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:32,864 INFO L93 Difference]: Finished difference Result 738 states and 760 transitions. [2018-01-30 02:55:32,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 02:55:32,865 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 370 [2018-01-30 02:55:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:32,866 INFO L225 Difference]: With dead ends: 738 [2018-01-30 02:55:32,866 INFO L226 Difference]: Without dead ends: 418 [2018-01-30 02:55:32,866 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:55:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-01-30 02:55:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 404. [2018-01-30 02:55:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-01-30 02:55:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 412 transitions. [2018-01-30 02:55:32,870 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 412 transitions. Word has length 370 [2018-01-30 02:55:32,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:32,871 INFO L432 AbstractCegarLoop]: Abstraction has 404 states and 412 transitions. [2018-01-30 02:55:32,871 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 02:55:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 412 transitions. [2018-01-30 02:55:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-01-30 02:55:32,872 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:32,872 INFO L350 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1] [2018-01-30 02:55:32,872 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash -545157184, now seen corresponding path program 13 times [2018-01-30 02:55:32,872 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:32,872 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:32,873 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:32,873 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:32,873 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:32,884 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2366 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-01-30 02:55:33,139 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:33,139 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 02:55:33,144 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:33,184 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2366 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-01-30 02:55:33,245 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:33,246 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-30 02:55:33,246 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 02:55:33,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 02:55:33,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:55:33,246 INFO L87 Difference]: Start difference. First operand 404 states and 412 transitions. Second operand 16 states. [2018-01-30 02:55:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:33,822 INFO L93 Difference]: Finished difference Result 790 states and 812 transitions. [2018-01-30 02:55:33,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 02:55:33,823 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 398 [2018-01-30 02:55:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:33,823 INFO L225 Difference]: With dead ends: 790 [2018-01-30 02:55:33,824 INFO L226 Difference]: Without dead ends: 446 [2018-01-30 02:55:33,824 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:55:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2018-01-30 02:55:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 432. [2018-01-30 02:55:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-01-30 02:55:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 440 transitions. [2018-01-30 02:55:33,829 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 440 transitions. Word has length 398 [2018-01-30 02:55:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:33,829 INFO L432 AbstractCegarLoop]: Abstraction has 432 states and 440 transitions. [2018-01-30 02:55:33,829 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 02:55:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 440 transitions. [2018-01-30 02:55:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-01-30 02:55:33,830 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:33,830 INFO L350 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1] [2018-01-30 02:55:33,831 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash -56229627, now seen corresponding path program 14 times [2018-01-30 02:55:33,831 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:33,831 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:33,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:33,831 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:33,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:33,843 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-01-30 02:55:34,127 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:34,127 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 02:55:34,146 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:55:34,156 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:34,184 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:34,188 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:34,190 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-01-30 02:55:34,273 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:34,273 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-30 02:55:34,273 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 02:55:34,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 02:55:34,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:55:34,274 INFO L87 Difference]: Start difference. First operand 432 states and 440 transitions. Second operand 17 states. [2018-01-30 02:55:34,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:34,558 INFO L93 Difference]: Finished difference Result 842 states and 864 transitions. [2018-01-30 02:55:34,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-30 02:55:34,558 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 426 [2018-01-30 02:55:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:34,559 INFO L225 Difference]: With dead ends: 842 [2018-01-30 02:55:34,560 INFO L226 Difference]: Without dead ends: 474 [2018-01-30 02:55:34,560 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:55:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-30 02:55:34,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 460. [2018-01-30 02:55:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-01-30 02:55:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 468 transitions. [2018-01-30 02:55:34,565 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 468 transitions. Word has length 426 [2018-01-30 02:55:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:34,566 INFO L432 AbstractCegarLoop]: Abstraction has 460 states and 468 transitions. [2018-01-30 02:55:34,566 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 02:55:34,566 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 468 transitions. [2018-01-30 02:55:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-01-30 02:55:34,567 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:34,567 INFO L350 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1] [2018-01-30 02:55:34,567 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:34,568 INFO L82 PathProgramCache]: Analyzing trace with hash 29206730, now seen corresponding path program 15 times [2018-01-30 02:55:34,568 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:34,568 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:34,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:34,568 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:34,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:34,580 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2018-01-30 02:55:35,013 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:35,014 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 02:55:35,018 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:55:35,034 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,050 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,063 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,066 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,069 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,072 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,080 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,085 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,093 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,108 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,120 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,133 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,151 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,167 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,189 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,213 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:35,215 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:35,218 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2018-01-30 02:55:35,298 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:35,299 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-01-30 02:55:35,299 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:55:35,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:55:35,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:55:35,299 INFO L87 Difference]: Start difference. First operand 460 states and 468 transitions. Second operand 18 states. [2018-01-30 02:55:36,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:36,443 INFO L93 Difference]: Finished difference Result 894 states and 916 transitions. [2018-01-30 02:55:36,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:55:36,443 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 454 [2018-01-30 02:55:36,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:36,444 INFO L225 Difference]: With dead ends: 894 [2018-01-30 02:55:36,444 INFO L226 Difference]: Without dead ends: 502 [2018-01-30 02:55:36,445 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:55:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-01-30 02:55:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 488. [2018-01-30 02:55:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-01-30 02:55:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 496 transitions. [2018-01-30 02:55:36,449 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 496 transitions. Word has length 454 [2018-01-30 02:55:36,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:36,450 INFO L432 AbstractCegarLoop]: Abstraction has 488 states and 496 transitions. [2018-01-30 02:55:36,450 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:55:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 496 transitions. [2018-01-30 02:55:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-01-30 02:55:36,451 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:36,452 INFO L350 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1] [2018-01-30 02:55:36,452 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:36,452 INFO L82 PathProgramCache]: Analyzing trace with hash -182434033, now seen corresponding path program 16 times [2018-01-30 02:55:36,452 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:36,452 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:36,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:36,452 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:36,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:36,465 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3584 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 3072 trivial. 0 not checked. [2018-01-30 02:55:36,791 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:36,791 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 02:55:36,800 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:55:36,841 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:36,844 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3584 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 3072 trivial. 0 not checked. [2018-01-30 02:55:36,923 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:36,923 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-01-30 02:55:36,923 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 02:55:36,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 02:55:36,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:55:36,924 INFO L87 Difference]: Start difference. First operand 488 states and 496 transitions. Second operand 19 states. [2018-01-30 02:55:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:38,374 INFO L93 Difference]: Finished difference Result 946 states and 968 transitions. [2018-01-30 02:55:38,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 02:55:38,375 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 482 [2018-01-30 02:55:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:38,376 INFO L225 Difference]: With dead ends: 946 [2018-01-30 02:55:38,376 INFO L226 Difference]: Without dead ends: 530 [2018-01-30 02:55:38,376 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:55:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-01-30 02:55:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 516. [2018-01-30 02:55:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-01-30 02:55:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 524 transitions. [2018-01-30 02:55:38,380 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 524 transitions. Word has length 482 [2018-01-30 02:55:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:38,381 INFO L432 AbstractCegarLoop]: Abstraction has 516 states and 524 transitions. [2018-01-30 02:55:38,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 02:55:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 524 transitions. [2018-01-30 02:55:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-01-30 02:55:38,383 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:38,383 INFO L350 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1] [2018-01-30 02:55:38,383 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash -750412844, now seen corresponding path program 17 times [2018-01-30 02:55:38,383 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:38,383 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:38,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:38,384 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:38,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:38,398 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4046 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 3468 trivial. 0 not checked. [2018-01-30 02:55:39,352 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:39,352 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 02:55:39,356 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:55:39,365 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,368 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,370 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,383 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,387 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,392 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,404 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,421 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,444 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,474 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:39,493 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:40,976 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:40,982 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:40,988 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4046 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 3468 trivial. 0 not checked. [2018-01-30 02:55:41,087 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:41,088 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-01-30 02:55:41,088 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 02:55:41,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 02:55:41,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:55:41,088 INFO L87 Difference]: Start difference. First operand 516 states and 524 transitions. Second operand 20 states. [2018-01-30 02:55:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:41,432 INFO L93 Difference]: Finished difference Result 998 states and 1020 transitions. [2018-01-30 02:55:41,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-30 02:55:41,433 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 510 [2018-01-30 02:55:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:41,434 INFO L225 Difference]: With dead ends: 998 [2018-01-30 02:55:41,434 INFO L226 Difference]: Without dead ends: 558 [2018-01-30 02:55:41,435 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:55:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2018-01-30 02:55:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 544. [2018-01-30 02:55:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2018-01-30 02:55:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 552 transitions. [2018-01-30 02:55:41,439 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 552 transitions. Word has length 510 [2018-01-30 02:55:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:41,440 INFO L432 AbstractCegarLoop]: Abstraction has 544 states and 552 transitions. [2018-01-30 02:55:41,440 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 02:55:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 552 transitions. [2018-01-30 02:55:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-01-30 02:55:41,442 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:41,442 INFO L350 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 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, 1, 1, 1, 1] [2018-01-30 02:55:41,442 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:41,442 INFO L82 PathProgramCache]: Analyzing trace with hash -20617447, now seen corresponding path program 18 times [2018-01-30 02:55:41,442 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:41,442 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:41,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:41,443 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:41,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:41,459 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4536 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 3888 trivial. 0 not checked. [2018-01-30 02:55:41,973 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:41,973 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 02:55:41,978 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:55:41,999 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,002 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,004 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,006 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,009 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,012 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,015 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,018 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,022 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,029 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,039 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,045 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,055 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,063 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,077 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,090 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,529 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,790 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,811 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:55:42,813 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:42,818 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4536 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 3888 trivial. 0 not checked. [2018-01-30 02:55:42,918 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:42,918 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-30 02:55:42,918 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 02:55:42,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 02:55:42,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:55:42,919 INFO L87 Difference]: Start difference. First operand 544 states and 552 transitions. Second operand 21 states. [2018-01-30 02:55:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:43,220 INFO L93 Difference]: Finished difference Result 1050 states and 1072 transitions. [2018-01-30 02:55:43,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 02:55:43,220 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 538 [2018-01-30 02:55:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:43,221 INFO L225 Difference]: With dead ends: 1050 [2018-01-30 02:55:43,221 INFO L226 Difference]: Without dead ends: 586 [2018-01-30 02:55:43,222 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:55:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2018-01-30 02:55:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 572. [2018-01-30 02:55:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2018-01-30 02:55:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 580 transitions. [2018-01-30 02:55:43,226 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 580 transitions. Word has length 538 [2018-01-30 02:55:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:43,226 INFO L432 AbstractCegarLoop]: Abstraction has 572 states and 580 transitions. [2018-01-30 02:55:43,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 02:55:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 580 transitions. [2018-01-30 02:55:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-01-30 02:55:43,228 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:43,228 INFO L350 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1] [2018-01-30 02:55:43,228 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:43,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1336448802, now seen corresponding path program 19 times [2018-01-30 02:55:43,228 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:43,229 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:43,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:43,229 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:43,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:43,242 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5054 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 4332 trivial. 0 not checked. [2018-01-30 02:55:43,894 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:43,894 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 02:55:43,899 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:43,942 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5054 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 4332 trivial. 0 not checked. [2018-01-30 02:55:44,042 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:44,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-01-30 02:55:44,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 02:55:44,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 02:55:44,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:55:44,043 INFO L87 Difference]: Start difference. First operand 572 states and 580 transitions. Second operand 22 states. [2018-01-30 02:55:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:44,341 INFO L93 Difference]: Finished difference Result 1102 states and 1124 transitions. [2018-01-30 02:55:44,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-30 02:55:44,341 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 566 [2018-01-30 02:55:44,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:44,342 INFO L225 Difference]: With dead ends: 1102 [2018-01-30 02:55:44,342 INFO L226 Difference]: Without dead ends: 614 [2018-01-30 02:55:44,343 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:55:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2018-01-30 02:55:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 600. [2018-01-30 02:55:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2018-01-30 02:55:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 608 transitions. [2018-01-30 02:55:44,347 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 608 transitions. Word has length 566 [2018-01-30 02:55:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:44,347 INFO L432 AbstractCegarLoop]: Abstraction has 600 states and 608 transitions. [2018-01-30 02:55:44,348 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 02:55:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 608 transitions. [2018-01-30 02:55:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-01-30 02:55:44,350 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:44,350 INFO L350 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 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, 1, 1, 1, 1] [2018-01-30 02:55:44,350 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:44,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1725128995, now seen corresponding path program 20 times [2018-01-30 02:55:44,350 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:44,350 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:44,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:44,351 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:55:44,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:44,377 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5600 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 4800 trivial. 0 not checked. [2018-01-30 02:55:44,855 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:44,855 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 02:55:44,866 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:55:44,879 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:44,910 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:44,915 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:44,918 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5600 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 4800 trivial. 0 not checked. [2018-01-30 02:55:45,027 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:45,027 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-01-30 02:55:45,027 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 02:55:45,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 02:55:45,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:55:45,028 INFO L87 Difference]: Start difference. First operand 600 states and 608 transitions. Second operand 23 states. [2018-01-30 02:55:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:45,448 INFO L93 Difference]: Finished difference Result 1154 states and 1176 transitions. [2018-01-30 02:55:45,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 02:55:45,450 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 594 [2018-01-30 02:55:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:45,451 INFO L225 Difference]: With dead ends: 1154 [2018-01-30 02:55:45,451 INFO L226 Difference]: Without dead ends: 642 [2018-01-30 02:55:45,452 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:55:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2018-01-30 02:55:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 628. [2018-01-30 02:55:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2018-01-30 02:55:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 636 transitions. [2018-01-30 02:55:45,456 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 636 transitions. Word has length 594 [2018-01-30 02:55:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:45,456 INFO L432 AbstractCegarLoop]: Abstraction has 628 states and 636 transitions. [2018-01-30 02:55:45,456 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 02:55:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 636 transitions. [2018-01-30 02:55:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-01-30 02:55:45,459 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:45,459 INFO L350 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 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, 1, 1, 1, 1] [2018-01-30 02:55:45,459 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:45,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1462833128, now seen corresponding path program 21 times [2018-01-30 02:55:45,459 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:45,459 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:45,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:45,460 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:45,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:45,474 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6174 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 5292 trivial. 0 not checked. [2018-01-30 02:55:46,048 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:46,048 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 02:55:46,072 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:55:46,083 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,096 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,099 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,102 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,105 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,108 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,114 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,122 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,131 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,139 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,149 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,163 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,180 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,194 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,213 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,243 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,267 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,297 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,339 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,384 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,434 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,488 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:55:46,490 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:46,495 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6174 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 5292 trivial. 0 not checked. [2018-01-30 02:55:46,621 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:46,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-01-30 02:55:46,622 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 02:55:46,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 02:55:46,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:55:46,622 INFO L87 Difference]: Start difference. First operand 628 states and 636 transitions. Second operand 24 states. [2018-01-30 02:55:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:47,014 INFO L93 Difference]: Finished difference Result 1206 states and 1228 transitions. [2018-01-30 02:55:47,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 02:55:47,014 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 622 [2018-01-30 02:55:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:47,016 INFO L225 Difference]: With dead ends: 1206 [2018-01-30 02:55:47,016 INFO L226 Difference]: Without dead ends: 670 [2018-01-30 02:55:47,017 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:55:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2018-01-30 02:55:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 656. [2018-01-30 02:55:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2018-01-30 02:55:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 664 transitions. [2018-01-30 02:55:47,029 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 664 transitions. Word has length 622 [2018-01-30 02:55:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:47,029 INFO L432 AbstractCegarLoop]: Abstraction has 656 states and 664 transitions. [2018-01-30 02:55:47,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 02:55:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 664 transitions. [2018-01-30 02:55:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2018-01-30 02:55:47,031 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:47,031 INFO L350 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 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, 1, 1, 1, 1] [2018-01-30 02:55:47,031 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:47,036 INFO L82 PathProgramCache]: Analyzing trace with hash -595053267, now seen corresponding path program 22 times [2018-01-30 02:55:47,036 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:47,036 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:47,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:47,037 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:47,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:47,061 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6776 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 5808 trivial. 0 not checked. [2018-01-30 02:55:47,688 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:47,688 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 02:55:47,706 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:55:47,754 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:55:47,757 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:55:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6776 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 5808 trivial. 0 not checked. [2018-01-30 02:55:47,901 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:55:47,901 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-01-30 02:55:47,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 02:55:47,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 02:55:47,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:55:47,902 INFO L87 Difference]: Start difference. First operand 656 states and 664 transitions. Second operand 25 states. [2018-01-30 02:55:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:55:48,282 INFO L93 Difference]: Finished difference Result 1258 states and 1280 transitions. [2018-01-30 02:55:48,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 02:55:48,283 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 650 [2018-01-30 02:55:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:55:48,284 INFO L225 Difference]: With dead ends: 1258 [2018-01-30 02:55:48,284 INFO L226 Difference]: Without dead ends: 698 [2018-01-30 02:55:48,285 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 651 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 02:55:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2018-01-30 02:55:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 684. [2018-01-30 02:55:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2018-01-30 02:55:48,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 692 transitions. [2018-01-30 02:55:48,289 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 692 transitions. Word has length 650 [2018-01-30 02:55:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:55:48,290 INFO L432 AbstractCegarLoop]: Abstraction has 684 states and 692 transitions. [2018-01-30 02:55:48,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 02:55:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 692 transitions. [2018-01-30 02:55:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-01-30 02:55:48,292 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:55:48,292 INFO L350 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1] [2018-01-30 02:55:48,292 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:55:48,293 INFO L82 PathProgramCache]: Analyzing trace with hash -401567502, now seen corresponding path program 23 times [2018-01-30 02:55:48,293 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:55:48,293 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:55:48,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:48,293 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:55:48,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:55:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:55:48,307 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:55:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7406 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 6348 trivial. 0 not checked. [2018-01-30 02:55:49,081 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:55:49,081 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 02:55:49,085 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:55:49,103 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,112 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,115 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,122 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,126 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,130 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,135 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,140 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,147 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,155 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,164 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,174 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,186 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,216 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,234 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,255 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,279 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,307 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,339 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:55:49,416 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:01,475 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:01,482 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:01,490 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7406 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 6348 trivial. 0 not checked. [2018-01-30 02:56:01,659 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:01,659 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-01-30 02:56:01,659 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:56:01,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:56:01,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:56:01,660 INFO L87 Difference]: Start difference. First operand 684 states and 692 transitions. Second operand 26 states. [2018-01-30 02:56:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:02,072 INFO L93 Difference]: Finished difference Result 1310 states and 1332 transitions. [2018-01-30 02:56:02,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-30 02:56:02,074 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 678 [2018-01-30 02:56:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:02,075 INFO L225 Difference]: With dead ends: 1310 [2018-01-30 02:56:02,075 INFO L226 Difference]: Without dead ends: 726 [2018-01-30 02:56:02,076 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:56:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2018-01-30 02:56:02,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 712. [2018-01-30 02:56:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2018-01-30 02:56:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 720 transitions. [2018-01-30 02:56:02,081 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 720 transitions. Word has length 678 [2018-01-30 02:56:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:02,081 INFO L432 AbstractCegarLoop]: Abstraction has 712 states and 720 transitions. [2018-01-30 02:56:02,081 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:56:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 720 transitions. [2018-01-30 02:56:02,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2018-01-30 02:56:02,084 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:02,084 INFO L350 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 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, 1, 1, 1, 1] [2018-01-30 02:56:02,084 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1898046263, now seen corresponding path program 24 times [2018-01-30 02:56:02,084 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:02,084 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:02,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:02,085 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:56:02,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:02,100 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 6912 trivial. 0 not checked. [2018-01-30 02:56:02,904 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:02,904 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 02:56:02,909 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:56:02,922 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,925 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,927 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,929 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,931 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,934 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,937 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,942 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,946 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,951 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,960 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,966 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,974 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,986 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:02,997 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,009 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,019 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,030 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,045 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,062 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,083 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,110 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,138 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:03,905 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:04,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:04,547 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:04,554 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 6912 trivial. 0 not checked. [2018-01-30 02:56:04,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:04,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-01-30 02:56:04,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 02:56:04,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 02:56:04,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:56:04,712 INFO L87 Difference]: Start difference. First operand 712 states and 720 transitions. Second operand 27 states. [2018-01-30 02:56:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:05,084 INFO L93 Difference]: Finished difference Result 1362 states and 1384 transitions. [2018-01-30 02:56:05,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 02:56:05,084 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 706 [2018-01-30 02:56:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:05,086 INFO L225 Difference]: With dead ends: 1362 [2018-01-30 02:56:05,086 INFO L226 Difference]: Without dead ends: 754 [2018-01-30 02:56:05,086 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:56:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-01-30 02:56:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 740. [2018-01-30 02:56:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2018-01-30 02:56:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 748 transitions. [2018-01-30 02:56:05,091 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 748 transitions. Word has length 706 [2018-01-30 02:56:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:05,091 INFO L432 AbstractCegarLoop]: Abstraction has 740 states and 748 transitions. [2018-01-30 02:56:05,091 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 02:56:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 748 transitions. [2018-01-30 02:56:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2018-01-30 02:56:05,094 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:05,094 INFO L350 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 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, 1, 1, 1, 1] [2018-01-30 02:56:05,094 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:05,095 INFO L82 PathProgramCache]: Analyzing trace with hash -449582084, now seen corresponding path program 25 times [2018-01-30 02:56:05,095 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:05,095 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:05,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:05,095 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:56:05,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:05,111 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8750 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 7500 trivial. 0 not checked. [2018-01-30 02:56:06,073 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:06,073 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) [2018-01-30 02:56:06,078 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:56:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:06,133 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8750 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 7500 trivial. 0 not checked. [2018-01-30 02:56:06,296 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:06,296 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-01-30 02:56:06,296 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 02:56:06,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 02:56:06,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-30 02:56:06,297 INFO L87 Difference]: Start difference. First operand 740 states and 748 transitions. Second operand 28 states. [2018-01-30 02:56:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:07,019 INFO L93 Difference]: Finished difference Result 1414 states and 1436 transitions. [2018-01-30 02:56:07,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 02:56:07,019 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 734 [2018-01-30 02:56:07,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:07,020 INFO L225 Difference]: With dead ends: 1414 [2018-01-30 02:56:07,020 INFO L226 Difference]: Without dead ends: 782 [2018-01-30 02:56:07,021 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 735 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 02:56:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2018-01-30 02:56:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 768. [2018-01-30 02:56:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2018-01-30 02:56:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 776 transitions. [2018-01-30 02:56:07,029 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 776 transitions. Word has length 734 [2018-01-30 02:56:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:07,029 INFO L432 AbstractCegarLoop]: Abstraction has 768 states and 776 transitions. [2018-01-30 02:56:07,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 02:56:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 776 transitions. [2018-01-30 02:56:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2018-01-30 02:56:07,033 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:07,033 INFO L350 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 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, 1, 1, 1, 1] [2018-01-30 02:56:07,033 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:07,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1747031231, now seen corresponding path program 26 times [2018-01-30 02:56:07,033 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:07,033 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:07,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:07,034 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:56:07,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:07,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9464 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 8112 trivial. 0 not checked. [2018-01-30 02:56:08,017 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:08,017 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 02:56:08,022 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:56:08,049 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:08,093 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:08,099 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:08,103 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9464 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 8112 trivial. 0 not checked. [2018-01-30 02:56:08,275 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:08,275 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-01-30 02:56:08,276 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 02:56:08,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 02:56:08,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:56:08,276 INFO L87 Difference]: Start difference. First operand 768 states and 776 transitions. Second operand 29 states. [2018-01-30 02:56:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:08,702 INFO L93 Difference]: Finished difference Result 1466 states and 1488 transitions. [2018-01-30 02:56:08,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-30 02:56:08,702 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 762 [2018-01-30 02:56:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:08,703 INFO L225 Difference]: With dead ends: 1466 [2018-01-30 02:56:08,704 INFO L226 Difference]: Without dead ends: 810 [2018-01-30 02:56:08,704 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:56:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-01-30 02:56:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 796. [2018-01-30 02:56:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2018-01-30 02:56:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 804 transitions. [2018-01-30 02:56:08,709 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 804 transitions. Word has length 762 [2018-01-30 02:56:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:08,709 INFO L432 AbstractCegarLoop]: Abstraction has 796 states and 804 transitions. [2018-01-30 02:56:08,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 02:56:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 804 transitions. [2018-01-30 02:56:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-01-30 02:56:08,712 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:08,713 INFO L350 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 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, 1, 1, 1, 1] [2018-01-30 02:56:08,713 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:08,713 INFO L82 PathProgramCache]: Analyzing trace with hash 853090566, now seen corresponding path program 27 times [2018-01-30 02:56:08,713 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:08,713 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:08,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:08,714 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:56:08,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:08,729 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10206 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 8748 trivial. 0 not checked. [2018-01-30 02:56:09,805 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:09,805 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 02:56:09,810 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:56:09,823 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,825 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,827 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,830 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,833 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,836 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,844 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,849 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,859 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,867 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,889 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,904 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,924 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,946 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:09,970 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,000 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,029 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,064 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,107 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,162 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,218 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,282 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,353 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,439 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,522 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,628 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,750 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:56:10,754 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:10,761 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10206 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 8748 trivial. 0 not checked. [2018-01-30 02:56:10,946 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:10,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-01-30 02:56:10,947 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 02:56:10,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 02:56:10,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:56:10,947 INFO L87 Difference]: Start difference. First operand 796 states and 804 transitions. Second operand 30 states. [2018-01-30 02:56:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:11,415 INFO L93 Difference]: Finished difference Result 1518 states and 1540 transitions. [2018-01-30 02:56:11,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 02:56:11,415 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 790 [2018-01-30 02:56:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:11,416 INFO L225 Difference]: With dead ends: 1518 [2018-01-30 02:56:11,416 INFO L226 Difference]: Without dead ends: 838 [2018-01-30 02:56:11,417 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:56:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2018-01-30 02:56:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 824. [2018-01-30 02:56:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2018-01-30 02:56:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 832 transitions. [2018-01-30 02:56:11,422 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 832 transitions. Word has length 790 [2018-01-30 02:56:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:11,422 INFO L432 AbstractCegarLoop]: Abstraction has 824 states and 832 transitions. [2018-01-30 02:56:11,422 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 02:56:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 832 transitions. [2018-01-30 02:56:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2018-01-30 02:56:11,426 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:11,426 INFO L350 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 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, 1, 1, 1, 1] [2018-01-30 02:56:11,426 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash 637259083, now seen corresponding path program 28 times [2018-01-30 02:56:11,426 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:11,426 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:11,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:11,427 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:56:11,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:11,442 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10976 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 9408 trivial. 0 not checked. [2018-01-30 02:56:12,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:12,558 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 02:56:12,564 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:56:12,622 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:12,626 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10976 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 9408 trivial. 0 not checked. [2018-01-30 02:56:12,817 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:12,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-01-30 02:56:12,817 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 02:56:12,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 02:56:12,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:56:12,818 INFO L87 Difference]: Start difference. First operand 824 states and 832 transitions. Second operand 31 states. [2018-01-30 02:56:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:13,288 INFO L93 Difference]: Finished difference Result 1570 states and 1592 transitions. [2018-01-30 02:56:13,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:56:13,288 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 818 [2018-01-30 02:56:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:13,290 INFO L225 Difference]: With dead ends: 1570 [2018-01-30 02:56:13,290 INFO L226 Difference]: Without dead ends: 866 [2018-01-30 02:56:13,291 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:56:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2018-01-30 02:56:13,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2018-01-30 02:56:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2018-01-30 02:56:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 860 transitions. [2018-01-30 02:56:13,295 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 860 transitions. Word has length 818 [2018-01-30 02:56:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:13,295 INFO L432 AbstractCegarLoop]: Abstraction has 852 states and 860 transitions. [2018-01-30 02:56:13,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 02:56:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 860 transitions. [2018-01-30 02:56:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2018-01-30 02:56:13,299 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:13,299 INFO L350 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1] [2018-01-30 02:56:13,299 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:13,299 INFO L82 PathProgramCache]: Analyzing trace with hash 389951504, now seen corresponding path program 29 times [2018-01-30 02:56:13,299 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:13,299 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:13,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:13,300 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:56:13,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:13,316 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 11774 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 10092 trivial. 0 not checked. [2018-01-30 02:56:14,405 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:14,405 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 02:56:14,410 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:56:14,424 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,426 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,428 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,433 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,437 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,441 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,446 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,474 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,485 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,497 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,511 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,527 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,545 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,567 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,619 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,688 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,728 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,824 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:14,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:15,019 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:15,102 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:27,158 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:27,169 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:27,181 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11774 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 10092 trivial. 0 not checked. [2018-01-30 02:56:27,411 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:27,412 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-01-30 02:56:27,412 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 02:56:27,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 02:56:27,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:56:27,413 INFO L87 Difference]: Start difference. First operand 852 states and 860 transitions. Second operand 32 states. [2018-01-30 02:56:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:27,884 INFO L93 Difference]: Finished difference Result 1622 states and 1644 transitions. [2018-01-30 02:56:27,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-30 02:56:27,884 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 846 [2018-01-30 02:56:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:27,885 INFO L225 Difference]: With dead ends: 1622 [2018-01-30 02:56:27,885 INFO L226 Difference]: Without dead ends: 894 [2018-01-30 02:56:27,886 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:56:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2018-01-30 02:56:27,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 880. [2018-01-30 02:56:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2018-01-30 02:56:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 888 transitions. [2018-01-30 02:56:27,891 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 888 transitions. Word has length 846 [2018-01-30 02:56:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:27,891 INFO L432 AbstractCegarLoop]: Abstraction has 880 states and 888 transitions. [2018-01-30 02:56:27,892 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 02:56:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 888 transitions. [2018-01-30 02:56:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2018-01-30 02:56:27,895 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:27,895 INFO L350 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 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, 1, 1, 1, 1] [2018-01-30 02:56:27,896 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1387792725, now seen corresponding path program 30 times [2018-01-30 02:56:27,896 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:27,896 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:27,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:27,896 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:56:27,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:27,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 10800 trivial. 0 not checked. [2018-01-30 02:56:29,156 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:29,156 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 02:56:29,161 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:56:29,175 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,177 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,179 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,182 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,184 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,187 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,190 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,193 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,197 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,204 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,213 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,219 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,230 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,237 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,246 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,257 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,267 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,285 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,302 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,317 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,339 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,359 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,385 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,407 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,433 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,510 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,546 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,593 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,634 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,764 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:56:29,768 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:29,775 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 10800 trivial. 0 not checked. [2018-01-30 02:56:29,999 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:30,000 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-01-30 02:56:30,000 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 02:56:30,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 02:56:30,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 02:56:30,001 INFO L87 Difference]: Start difference. First operand 880 states and 888 transitions. Second operand 33 states. [2018-01-30 02:56:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:30,525 INFO L93 Difference]: Finished difference Result 1674 states and 1696 transitions. [2018-01-30 02:56:30,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 02:56:30,525 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 874 [2018-01-30 02:56:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:30,527 INFO L225 Difference]: With dead ends: 1674 [2018-01-30 02:56:30,527 INFO L226 Difference]: Without dead ends: 922 [2018-01-30 02:56:30,528 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 875 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 02:56:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2018-01-30 02:56:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 908. [2018-01-30 02:56:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2018-01-30 02:56:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 916 transitions. [2018-01-30 02:56:30,533 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 916 transitions. Word has length 874 [2018-01-30 02:56:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:30,533 INFO L432 AbstractCegarLoop]: Abstraction has 908 states and 916 transitions. [2018-01-30 02:56:30,533 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 02:56:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 916 transitions. [2018-01-30 02:56:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2018-01-30 02:56:30,537 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:30,537 INFO L350 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 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, 1, 1, 1, 1] [2018-01-30 02:56:30,537 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:30,537 INFO L82 PathProgramCache]: Analyzing trace with hash 983636250, now seen corresponding path program 31 times [2018-01-30 02:56:30,537 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:30,537 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:30,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:30,538 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:56:30,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:30,553 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 13454 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 11532 trivial. 0 not checked. [2018-01-30 02:56:31,958 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:31,958 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 02:56:31,962 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:56:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:32,026 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13454 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 11532 trivial. 0 not checked. [2018-01-30 02:56:32,251 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:32,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-01-30 02:56:32,252 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 02:56:32,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 02:56:32,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 02:56:32,252 INFO L87 Difference]: Start difference. First operand 908 states and 916 transitions. Second operand 34 states. [2018-01-30 02:56:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:56:32,831 INFO L93 Difference]: Finished difference Result 1726 states and 1748 transitions. [2018-01-30 02:56:32,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 02:56:32,832 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 902 [2018-01-30 02:56:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:56:32,833 INFO L225 Difference]: With dead ends: 1726 [2018-01-30 02:56:32,833 INFO L226 Difference]: Without dead ends: 950 [2018-01-30 02:56:32,834 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 02:56:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2018-01-30 02:56:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 936. [2018-01-30 02:56:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2018-01-30 02:56:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 944 transitions. [2018-01-30 02:56:32,840 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 944 transitions. Word has length 902 [2018-01-30 02:56:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:56:32,841 INFO L432 AbstractCegarLoop]: Abstraction has 936 states and 944 transitions. [2018-01-30 02:56:32,841 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 02:56:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 944 transitions. [2018-01-30 02:56:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2018-01-30 02:56:32,845 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:56:32,845 INFO L350 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 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, 1, 1, 1, 1] [2018-01-30 02:56:32,845 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:56:32,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1219420321, now seen corresponding path program 32 times [2018-01-30 02:56:32,845 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:56:32,845 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:56:32,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:32,846 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:56:32,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:56:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:56:32,862 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:56:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14336 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 12288 trivial. 0 not checked. [2018-01-30 02:56:34,211 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:56:34,211 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 02:56:34,216 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:56:34,232 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:34,277 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:56:34,287 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:56:34,291 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:56:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14336 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 12288 trivial. 0 not checked. [2018-01-30 02:56:34,545 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:56:34,545 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-01-30 02:56:34,546 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 02:56:34,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 02:56:34,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:56:34,546 INFO L87 Difference]: Start difference. First operand 936 states and 944 transitions. Second operand 35 states. Received shutdown request... [2018-01-30 02:56:35,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-30 02:56:35,066 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 02:56:35,070 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 02:56:35,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:56:35 BasicIcfg [2018-01-30 02:56:35,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 02:56:35,070 INFO L168 Benchmark]: Toolchain (without parser) took 72329.87 ms. Allocated memory was 151.0 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 117.2 MB in the beginning and 904.4 MB in the end (delta: -787.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-30 02:56:35,071 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 02:56:35,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.99 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 108.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:56:35,071 INFO L168 Benchmark]: Boogie Preprocessor took 21.50 ms. Allocated memory is still 151.0 MB. Free memory was 108.7 MB in the beginning and 106.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-30 02:56:35,075 INFO L168 Benchmark]: RCFGBuilder took 353.81 ms. Allocated memory is still 151.0 MB. Free memory was 106.9 MB in the beginning and 91.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-30 02:56:35,075 INFO L168 Benchmark]: IcfgTransformer took 11.60 ms. Allocated memory is still 151.0 MB. Free memory was 91.7 MB in the beginning and 90.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 5.3 GB. [2018-01-30 02:56:35,075 INFO L168 Benchmark]: TraceAbstraction took 71814.51 ms. Allocated memory was 151.0 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 90.4 MB in the beginning and 904.4 MB in the end (delta: -814.0 MB). Peak memory consumption was 984.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:56:35,076 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 125.99 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 108.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 21.50 ms. Allocated memory is still 151.0 MB. Free memory was 108.7 MB in the beginning and 106.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 353.81 ms. Allocated memory is still 151.0 MB. Free memory was 106.9 MB in the beginning and 91.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * IcfgTransformer took 11.60 ms. Allocated memory is still 151.0 MB. Free memory was 91.7 MB in the beginning and 90.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 71814.51 ms. Allocated memory was 151.0 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 90.4 MB in the beginning and 904.4 MB in the end (delta: -814.0 MB). Peak memory consumption was 984.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (936states) and interpolant automaton (currently 35 states, 35 states before enhancement), while ReachableStatesComputation was computing reachable states (1653 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 59 locations, 1 error locations. TIMEOUT Result, 71.7s OverallTime, 34 OverallIterations, 33 TraceHistogramMax, 14.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1404 SDtfs, 15500 SDslu, 9736 SDs, 0 SdLazy, 14538 SolverSat, 4879 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16469 GetRequests, 15908 SyntacticMatches, 0 SemanticMatches, 561 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=936occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 33 MinimizatonAttempts, 448 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 33.6s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 31805 NumberOfCodeBlocks, 31805 NumberOfCodeBlocksAsserted, 327 NumberOfCheckSat, 31739 ConstructedInterpolants, 0 QuantifiedInterpolants, 25491625 SizeOfPredicates, 32 NumberOfNonLiveVariables, 20176 ConjunctsInSsa, 598 ConjunctsInUnsatCore, 66 InterpolantComputations, 2 PerfectInterpolantSequences, 274560/320320 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_init7_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_02-56-35-082.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_init7_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_02-56-35-082.csv Completed graceful shutdown