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/sorting_selectionsort_false-unreach-call2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 02:33:01,053 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 02:33:01,054 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 02:33:01,063 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 02:33:01,063 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 02:33:01,064 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 02:33:01,064 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 02:33:01,065 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 02:33:01,066 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 02:33:01,067 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 02:33:01,067 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 02:33:01,067 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 02:33:01,068 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 02:33:01,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 02:33:01,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 02:33:01,071 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 02:33:01,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 02:33:01,073 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 02:33:01,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 02:33:01,074 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 02:33:01,080 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 02:33:01,083 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 02:33:01,088 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 02:33:01,088 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 02:33:01,089 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 02:33:01,089 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 02:33:01,089 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 02:33:01,089 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 02:33:01,089 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 02:33:01,089 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 02:33:01,089 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 02:33:01,089 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 02:33:01,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 02:33:01,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 02:33:01,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 02:33:01,091 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 02:33:01,092 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 02:33:01,092 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 02:33:01,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 02:33:01,117 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 02:33:01,119 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 02:33:01,120 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 02:33:01,120 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 02:33:01,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_false-unreach-call2_ground.i [2018-01-30 02:33:01,200 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 02:33:01,201 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 02:33:01,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 02:33:01,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 02:33:01,205 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 02:33:01,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6791395a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01, skipping insertion in model container [2018-01-30 02:33:01,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,217 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:33:01,226 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:33:01,296 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:33:01,305 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:33:01,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01 WrapperNode [2018-01-30 02:33:01,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 02:33:01,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 02:33:01,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 02:33:01,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 02:33:01,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 02:33:01,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 02:33:01,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 02:33:01,328 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 02:33:01,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (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 02:33:01,363 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 02:33:01,363 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 02:33:01,363 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 02:33:01,363 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 02:33:01,364 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 02:33:01,364 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 02:33:01,364 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 02:33:01,364 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 02:33:01,364 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 02:33:01,647 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 02:33:01,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:33:01 BoogieIcfgContainer [2018-01-30 02:33:01,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 02:33:01,647 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 02:33:01,647 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 02:33:01,648 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 02:33:01,650 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:33:01" (1/1) ... [2018-01-30 02:33:01,652 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 02:33:01,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:33:01 BasicIcfg [2018-01-30 02:33:01,660 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 02:33:01,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 02:33:01,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 02:33:01,662 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 02:33:01,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:33:01" (1/4) ... [2018-01-30 02:33:01,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f10eaf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:33:01, skipping insertion in model container [2018-01-30 02:33:01,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:33:01" (2/4) ... [2018-01-30 02:33:01,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f10eaf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:33:01, skipping insertion in model container [2018-01-30 02:33:01,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:33:01" (3/4) ... [2018-01-30 02:33:01,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f10eaf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:33:01, skipping insertion in model container [2018-01-30 02:33:01,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:33:01" (4/4) ... [2018-01-30 02:33:01,665 INFO L107 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_false-unreach-call2_ground.ileft_unchanged_by_heapseparator [2018-01-30 02:33:01,670 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 02:33:01,675 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 02:33:01,704 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 02:33:01,704 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 02:33:01,704 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 02:33:01,704 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 02:33:01,704 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 02:33:01,705 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 02:33:01,705 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 02:33:01,705 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 02:33:01,705 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 02:33:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-01-30 02:33:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-30 02:33:01,720 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:01,721 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:33:01,721 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:01,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1424759154, now seen corresponding path program 1 times [2018-01-30 02:33:01,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:01,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:01,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:01,755 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:01,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:01,779 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:01,802 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 02:33:01,804 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:33:01,804 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 02:33:01,805 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 02:33:01,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 02:33:01,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 02:33:01,815 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2018-01-30 02:33:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:01,836 INFO L93 Difference]: Finished difference Result 124 states and 160 transitions. [2018-01-30 02:33:01,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 02:33:01,837 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-30 02:33:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:01,844 INFO L225 Difference]: With dead ends: 124 [2018-01-30 02:33:01,844 INFO L226 Difference]: Without dead ends: 61 [2018-01-30 02:33:01,848 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 02:33:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-30 02:33:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-01-30 02:33:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-01-30 02:33:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2018-01-30 02:33:01,945 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 19 [2018-01-30 02:33:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:01,946 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2018-01-30 02:33:01,946 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 02:33:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2018-01-30 02:33:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-30 02:33:01,946 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:01,947 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] [2018-01-30 02:33:01,947 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:01,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1661424725, now seen corresponding path program 1 times [2018-01-30 02:33:01,947 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:01,947 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:01,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:01,948 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:01,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:01,954 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:02,013 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 02:33:02,013 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:33:02,013 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:33:02,014 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:33:02,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:33:02,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:33:02,015 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 3 states. [2018-01-30 02:33:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:02,151 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2018-01-30 02:33:02,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:33:02,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-30 02:33:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:02,156 INFO L225 Difference]: With dead ends: 114 [2018-01-30 02:33:02,156 INFO L226 Difference]: Without dead ends: 95 [2018-01-30 02:33:02,157 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 02:33:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-01-30 02:33:02,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2018-01-30 02:33:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-30 02:33:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2018-01-30 02:33:02,163 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 20 [2018-01-30 02:33:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:02,163 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2018-01-30 02:33:02,163 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:33:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2018-01-30 02:33:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-30 02:33:02,164 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:02,164 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] [2018-01-30 02:33:02,164 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:02,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1090296639, now seen corresponding path program 1 times [2018-01-30 02:33:02,164 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:02,165 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:02,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,165 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:02,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:02,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:02,242 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 02:33:02,242 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:33:02,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-30 02:33:02,243 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 02:33:02,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 02:33:02,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-30 02:33:02,243 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 4 states. [2018-01-30 02:33:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:02,455 INFO L93 Difference]: Finished difference Result 153 states and 185 transitions. [2018-01-30 02:33:02,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 02:33:02,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-30 02:33:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:02,456 INFO L225 Difference]: With dead ends: 153 [2018-01-30 02:33:02,456 INFO L226 Difference]: Without dead ends: 100 [2018-01-30 02:33:02,456 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:33:02,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-30 02:33:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 67. [2018-01-30 02:33:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-30 02:33:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2018-01-30 02:33:02,461 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 25 [2018-01-30 02:33:02,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:02,461 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2018-01-30 02:33:02,461 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 02:33:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2018-01-30 02:33:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-30 02:33:02,462 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:02,462 INFO L350 BasicCegarLoop]: trace histogram [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 02:33:02,462 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:02,462 INFO L82 PathProgramCache]: Analyzing trace with hash -663166957, now seen corresponding path program 1 times [2018-01-30 02:33:02,462 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:02,462 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:02,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,463 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:02,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:02,467 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 02:33:02,503 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:33:02,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:33:02,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:33:02,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:33:02,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:33:02,504 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 3 states. [2018-01-30 02:33:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:02,550 INFO L93 Difference]: Finished difference Result 150 states and 180 transitions. [2018-01-30 02:33:02,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:33:02,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-30 02:33:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:02,551 INFO L225 Difference]: With dead ends: 150 [2018-01-30 02:33:02,551 INFO L226 Difference]: Without dead ends: 97 [2018-01-30 02:33:02,551 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 02:33:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-30 02:33:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 72. [2018-01-30 02:33:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-01-30 02:33:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2018-01-30 02:33:02,556 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 29 [2018-01-30 02:33:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:02,557 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2018-01-30 02:33:02,557 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:33:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2018-01-30 02:33:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-30 02:33:02,557 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:02,557 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-30 02:33:02,557 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash 345665407, now seen corresponding path program 1 times [2018-01-30 02:33:02,558 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:02,558 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:02,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,558 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:02,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:02,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:02,636 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:02,636 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:33:02,643 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:02,656 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:02,684 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:02,684 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:33:02,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:33:02,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:33:02,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:33:02,685 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 5 states. [2018-01-30 02:33:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:02,781 INFO L93 Difference]: Finished difference Result 178 states and 219 transitions. [2018-01-30 02:33:02,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-30 02:33:02,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-30 02:33:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:02,782 INFO L225 Difference]: With dead ends: 178 [2018-01-30 02:33:02,782 INFO L226 Difference]: Without dead ends: 120 [2018-01-30 02:33:02,783 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:33:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-30 02:33:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 80. [2018-01-30 02:33:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-30 02:33:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2018-01-30 02:33:02,795 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 30 [2018-01-30 02:33:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:02,796 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2018-01-30 02:33:02,796 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:33:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2018-01-30 02:33:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-30 02:33:02,797 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:02,797 INFO L350 BasicCegarLoop]: trace histogram [3, 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 02:33:02,797 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:02,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1150456915, now seen corresponding path program 1 times [2018-01-30 02:33:02,797 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:02,798 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:02,798 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,798 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:02,798 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:02,807 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:02,892 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:02,892 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 02:33:02,897 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:02,905 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:02,934 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:02,934 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-30 02:33:02,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 02:33:02,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 02:33:02,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-30 02:33:02,935 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand 6 states. [2018-01-30 02:33:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:03,289 INFO L93 Difference]: Finished difference Result 187 states and 230 transitions. [2018-01-30 02:33:03,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:33:03,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-01-30 02:33:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:03,290 INFO L225 Difference]: With dead ends: 187 [2018-01-30 02:33:03,290 INFO L226 Difference]: Without dead ends: 129 [2018-01-30 02:33:03,291 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:33:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-30 02:33:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 89. [2018-01-30 02:33:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-30 02:33:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2018-01-30 02:33:03,297 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 34 [2018-01-30 02:33:03,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:03,297 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2018-01-30 02:33:03,297 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 02:33:03,298 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2018-01-30 02:33:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-30 02:33:03,298 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:03,298 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2018-01-30 02:33:03,298 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:03,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1081856217, now seen corresponding path program 2 times [2018-01-30 02:33:03,299 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:03,299 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:03,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:03,299 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:03,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:03,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:03,410 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:03,410 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 02:33:03,415 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:33:03,425 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:03,427 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:03,427 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:03,429 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:03,453 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:03,453 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 02:33:03,453 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 02:33:03,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 02:33:03,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:33:03,453 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand 7 states. [2018-01-30 02:33:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:03,668 INFO L93 Difference]: Finished difference Result 196 states and 241 transitions. [2018-01-30 02:33:03,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 02:33:03,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-01-30 02:33:03,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:03,669 INFO L225 Difference]: With dead ends: 196 [2018-01-30 02:33:03,669 INFO L226 Difference]: Without dead ends: 138 [2018-01-30 02:33:03,669 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:33:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-30 02:33:03,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 98. [2018-01-30 02:33:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-30 02:33:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2018-01-30 02:33:03,677 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 38 [2018-01-30 02:33:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:03,677 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2018-01-30 02:33:03,677 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 02:33:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2018-01-30 02:33:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-30 02:33:03,678 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:03,678 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2018-01-30 02:33:03,678 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:03,678 INFO L82 PathProgramCache]: Analyzing trace with hash -540786693, now seen corresponding path program 3 times [2018-01-30 02:33:03,678 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:03,678 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:03,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:03,679 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:03,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:03,685 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:03,764 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:03,764 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 02:33:03,770 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:33:03,775 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:03,777 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:03,778 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:03,779 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:03,782 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:03,782 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:03,783 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:03,804 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:03,804 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-01-30 02:33:03,805 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-30 02:33:03,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-30 02:33:03,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-01-30 02:33:03,805 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand 8 states. [2018-01-30 02:33:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:04,005 INFO L93 Difference]: Finished difference Result 205 states and 252 transitions. [2018-01-30 02:33:04,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 02:33:04,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-01-30 02:33:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:04,006 INFO L225 Difference]: With dead ends: 205 [2018-01-30 02:33:04,006 INFO L226 Difference]: Without dead ends: 147 [2018-01-30 02:33:04,006 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:33:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-30 02:33:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 107. [2018-01-30 02:33:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-30 02:33:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 127 transitions. [2018-01-30 02:33:04,010 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 127 transitions. Word has length 42 [2018-01-30 02:33:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:04,010 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 127 transitions. [2018-01-30 02:33:04,010 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-30 02:33:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 127 transitions. [2018-01-30 02:33:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-30 02:33:04,011 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:04,011 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2018-01-30 02:33:04,011 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash -853031217, now seen corresponding path program 4 times [2018-01-30 02:33:04,012 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:04,012 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:04,012 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:04,012 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:04,012 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:04,018 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:04,328 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:04,328 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 02:33:04,332 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:33:04,362 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:04,366 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:04,399 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:04,399 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 02:33:04,399 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:33:04,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:33:04,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:33:04,400 INFO L87 Difference]: Start difference. First operand 107 states and 127 transitions. Second operand 9 states. [2018-01-30 02:33:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:04,578 INFO L93 Difference]: Finished difference Result 214 states and 263 transitions. [2018-01-30 02:33:04,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 02:33:04,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-01-30 02:33:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:04,579 INFO L225 Difference]: With dead ends: 214 [2018-01-30 02:33:04,579 INFO L226 Difference]: Without dead ends: 156 [2018-01-30 02:33:04,580 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:33:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-30 02:33:04,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 116. [2018-01-30 02:33:04,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-30 02:33:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2018-01-30 02:33:04,587 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 46 [2018-01-30 02:33:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:04,587 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2018-01-30 02:33:04,587 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:33:04,587 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2018-01-30 02:33:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-30 02:33:04,588 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:04,588 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 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] [2018-01-30 02:33:04,588 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:04,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1123826781, now seen corresponding path program 5 times [2018-01-30 02:33:04,588 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:04,588 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:04,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:04,589 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:04,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:04,597 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:04,668 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:04,669 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 02:33:04,674 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:33:04,683 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:04,688 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:04,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:04,690 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:04,691 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:04,691 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:04,696 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:04,697 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:04,698 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:04,724 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:04,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-01-30 02:33:04,725 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 02:33:04,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 02:33:04,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:33:04,726 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand 10 states. [2018-01-30 02:33:04,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:04,945 INFO L93 Difference]: Finished difference Result 223 states and 274 transitions. [2018-01-30 02:33:04,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-30 02:33:04,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-01-30 02:33:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:04,946 INFO L225 Difference]: With dead ends: 223 [2018-01-30 02:33:04,946 INFO L226 Difference]: Without dead ends: 165 [2018-01-30 02:33:04,947 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:33:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-30 02:33:04,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 125. [2018-01-30 02:33:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-30 02:33:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 149 transitions. [2018-01-30 02:33:04,951 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 149 transitions. Word has length 50 [2018-01-30 02:33:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:04,951 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 149 transitions. [2018-01-30 02:33:04,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 02:33:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 149 transitions. [2018-01-30 02:33:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-01-30 02:33:04,952 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:04,952 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 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] [2018-01-30 02:33:04,952 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:04,952 INFO L82 PathProgramCache]: Analyzing trace with hash 841823863, now seen corresponding path program 6 times [2018-01-30 02:33:04,952 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:04,952 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:04,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:04,953 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:04,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:04,958 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:05,019 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:05,019 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 02:33:05,025 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:33:05,028 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,030 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,031 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,031 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,032 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,033 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,034 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,035 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:05,036 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:05,037 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:05,059 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:05,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-30 02:33:05,060 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 02:33:05,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 02:33:05,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:33:05,060 INFO L87 Difference]: Start difference. First operand 125 states and 149 transitions. Second operand 11 states. [2018-01-30 02:33:05,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:05,168 INFO L93 Difference]: Finished difference Result 232 states and 285 transitions. [2018-01-30 02:33:05,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-30 02:33:05,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2018-01-30 02:33:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:05,169 INFO L225 Difference]: With dead ends: 232 [2018-01-30 02:33:05,169 INFO L226 Difference]: Without dead ends: 174 [2018-01-30 02:33:05,169 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:33:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-30 02:33:05,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 134. [2018-01-30 02:33:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-30 02:33:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-01-30 02:33:05,173 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 54 [2018-01-30 02:33:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:05,174 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-01-30 02:33:05,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 02:33:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-01-30 02:33:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-01-30 02:33:05,175 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:05,175 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 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] [2018-01-30 02:33:05,175 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:05,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1022959435, now seen corresponding path program 7 times [2018-01-30 02:33:05,175 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:05,175 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:05,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:05,176 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:05,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:05,181 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:05,248 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:05,248 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 02:33:05,253 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:05,264 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:05,291 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:05,291 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-01-30 02:33:05,291 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:33:05,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:33:05,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:33:05,292 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 12 states. [2018-01-30 02:33:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:05,435 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2018-01-30 02:33:05,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 02:33:05,436 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2018-01-30 02:33:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:05,436 INFO L225 Difference]: With dead ends: 241 [2018-01-30 02:33:05,436 INFO L226 Difference]: Without dead ends: 183 [2018-01-30 02:33:05,437 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:33:05,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-30 02:33:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 143. [2018-01-30 02:33:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-30 02:33:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 171 transitions. [2018-01-30 02:33:05,441 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 171 transitions. Word has length 58 [2018-01-30 02:33:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:05,441 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 171 transitions. [2018-01-30 02:33:05,441 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:33:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 171 transitions. [2018-01-30 02:33:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-30 02:33:05,442 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:05,442 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 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] [2018-01-30 02:33:05,442 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1153663457, now seen corresponding path program 8 times [2018-01-30 02:33:05,442 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:05,442 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:05,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:05,443 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:05,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:05,448 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:05,515 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:05,515 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 02:33:05,519 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:33:05,523 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:05,526 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:05,538 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:05,540 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:05,563 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:05,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 02:33:05,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 02:33:05,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 02:33:05,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:33:05,564 INFO L87 Difference]: Start difference. First operand 143 states and 171 transitions. Second operand 13 states. [2018-01-30 02:33:06,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:06,141 INFO L93 Difference]: Finished difference Result 250 states and 307 transitions. [2018-01-30 02:33:06,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:33:06,141 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2018-01-30 02:33:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:06,141 INFO L225 Difference]: With dead ends: 250 [2018-01-30 02:33:06,142 INFO L226 Difference]: Without dead ends: 192 [2018-01-30 02:33:06,142 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:33:06,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-30 02:33:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 152. [2018-01-30 02:33:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-30 02:33:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 182 transitions. [2018-01-30 02:33:06,146 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 182 transitions. Word has length 62 [2018-01-30 02:33:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:06,146 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 182 transitions. [2018-01-30 02:33:06,146 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 02:33:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 182 transitions. [2018-01-30 02:33:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-01-30 02:33:06,147 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:06,147 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 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] [2018-01-30 02:33:06,147 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:06,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1739828493, now seen corresponding path program 9 times [2018-01-30 02:33:06,147 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:06,147 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:06,148 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:06,148 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:06,148 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:06,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:06,273 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:06,273 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 02:33:06,281 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:33:06,289 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,293 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,293 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,294 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,295 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,296 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,296 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,297 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,298 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,299 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,300 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:06,300 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:06,301 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:06,328 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:06,329 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-01-30 02:33:06,329 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 02:33:06,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 02:33:06,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-01-30 02:33:06,329 INFO L87 Difference]: Start difference. First operand 152 states and 182 transitions. Second operand 14 states. [2018-01-30 02:33:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:06,501 INFO L93 Difference]: Finished difference Result 259 states and 318 transitions. [2018-01-30 02:33:06,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-30 02:33:06,502 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2018-01-30 02:33:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:06,502 INFO L225 Difference]: With dead ends: 259 [2018-01-30 02:33:06,502 INFO L226 Difference]: Without dead ends: 201 [2018-01-30 02:33:06,503 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:33:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-01-30 02:33:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 161. [2018-01-30 02:33:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-30 02:33:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 193 transitions. [2018-01-30 02:33:06,507 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 193 transitions. Word has length 66 [2018-01-30 02:33:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:06,507 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 193 transitions. [2018-01-30 02:33:06,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 02:33:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 193 transitions. [2018-01-30 02:33:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-01-30 02:33:06,508 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:06,508 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 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] [2018-01-30 02:33:06,508 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:06,508 INFO L82 PathProgramCache]: Analyzing trace with hash 217947591, now seen corresponding path program 10 times [2018-01-30 02:33:06,508 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:06,508 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:06,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:06,508 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:06,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:06,513 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:06,803 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:06,803 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 02:33:06,813 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:33:06,822 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:06,823 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:06,856 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:06,856 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 02:33:06,856 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 02:33:06,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 02:33:06,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:33:06,856 INFO L87 Difference]: Start difference. First operand 161 states and 193 transitions. Second operand 15 states. [2018-01-30 02:33:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:07,061 INFO L93 Difference]: Finished difference Result 268 states and 329 transitions. [2018-01-30 02:33:07,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 02:33:07,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2018-01-30 02:33:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:07,062 INFO L225 Difference]: With dead ends: 268 [2018-01-30 02:33:07,062 INFO L226 Difference]: Without dead ends: 210 [2018-01-30 02:33:07,063 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:33:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-30 02:33:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 170. [2018-01-30 02:33:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-01-30 02:33:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 204 transitions. [2018-01-30 02:33:07,067 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 204 transitions. Word has length 70 [2018-01-30 02:33:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:07,067 INFO L432 AbstractCegarLoop]: Abstraction has 170 states and 204 transitions. [2018-01-30 02:33:07,067 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 02:33:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 204 transitions. [2018-01-30 02:33:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-01-30 02:33:07,068 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:07,068 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 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] [2018-01-30 02:33:07,068 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash -542810469, now seen corresponding path program 11 times [2018-01-30 02:33:07,068 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:07,068 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:07,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:07,069 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:07,069 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:07,074 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:07,188 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:07,189 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 02:33:07,196 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:33:07,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,201 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,201 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,202 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,203 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,203 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,204 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,205 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,206 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,206 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,209 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:07,209 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:07,211 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:07,234 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:07,235 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-30 02:33:07,235 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 02:33:07,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 02:33:07,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:33:07,235 INFO L87 Difference]: Start difference. First operand 170 states and 204 transitions. Second operand 16 states. [2018-01-30 02:33:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:07,508 INFO L93 Difference]: Finished difference Result 277 states and 340 transitions. [2018-01-30 02:33:07,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 02:33:07,510 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2018-01-30 02:33:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:07,510 INFO L225 Difference]: With dead ends: 277 [2018-01-30 02:33:07,511 INFO L226 Difference]: Without dead ends: 219 [2018-01-30 02:33:07,511 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:33:07,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-30 02:33:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 179. [2018-01-30 02:33:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-30 02:33:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 215 transitions. [2018-01-30 02:33:07,516 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 215 transitions. Word has length 74 [2018-01-30 02:33:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:07,516 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 215 transitions. [2018-01-30 02:33:07,516 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 02:33:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 215 transitions. [2018-01-30 02:33:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-30 02:33:07,517 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:07,517 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 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] [2018-01-30 02:33:07,517 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1541892753, now seen corresponding path program 12 times [2018-01-30 02:33:07,517 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:07,517 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:07,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:07,517 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:07,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:07,522 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:08,074 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:08,074 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 02:33:08,080 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:33:08,097 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,099 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,099 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,100 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,106 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,106 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,107 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,108 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,109 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,110 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:08,111 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:08,112 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:08,155 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:08,155 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-30 02:33:08,155 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 02:33:08,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 02:33:08,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:33:08,156 INFO L87 Difference]: Start difference. First operand 179 states and 215 transitions. Second operand 17 states. [2018-01-30 02:33:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:08,698 INFO L93 Difference]: Finished difference Result 286 states and 351 transitions. [2018-01-30 02:33:08,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-30 02:33:08,698 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2018-01-30 02:33:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:08,699 INFO L225 Difference]: With dead ends: 286 [2018-01-30 02:33:08,699 INFO L226 Difference]: Without dead ends: 228 [2018-01-30 02:33:08,699 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:33:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-01-30 02:33:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 188. [2018-01-30 02:33:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-30 02:33:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 226 transitions. [2018-01-30 02:33:08,704 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 226 transitions. Word has length 78 [2018-01-30 02:33:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:08,704 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 226 transitions. [2018-01-30 02:33:08,704 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 02:33:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 226 transitions. [2018-01-30 02:33:08,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-01-30 02:33:08,705 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:08,705 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 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] [2018-01-30 02:33:08,705 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:08,705 INFO L82 PathProgramCache]: Analyzing trace with hash -72596925, now seen corresponding path program 13 times [2018-01-30 02:33:08,705 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:08,705 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:08,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:08,706 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:08,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:08,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:09,055 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:09,055 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 02:33:09,060 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:09,068 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:09,092 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:09,092 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-01-30 02:33:09,092 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:33:09,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:33:09,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:33:09,093 INFO L87 Difference]: Start difference. First operand 188 states and 226 transitions. Second operand 18 states. [2018-01-30 02:33:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:09,296 INFO L93 Difference]: Finished difference Result 295 states and 362 transitions. [2018-01-30 02:33:09,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:33:09,296 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2018-01-30 02:33:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:09,296 INFO L225 Difference]: With dead ends: 295 [2018-01-30 02:33:09,297 INFO L226 Difference]: Without dead ends: 237 [2018-01-30 02:33:09,297 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 02:33:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-01-30 02:33:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 197. [2018-01-30 02:33:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-30 02:33:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 237 transitions. [2018-01-30 02:33:09,302 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 237 transitions. Word has length 82 [2018-01-30 02:33:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:09,302 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 237 transitions. [2018-01-30 02:33:09,302 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:33:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 237 transitions. [2018-01-30 02:33:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-01-30 02:33:09,303 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:09,303 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 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] [2018-01-30 02:33:09,303 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:09,303 INFO L82 PathProgramCache]: Analyzing trace with hash -717921001, now seen corresponding path program 14 times [2018-01-30 02:33:09,303 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:09,303 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:09,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:09,304 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:09,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:09,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:09,878 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:09,878 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 02:33:09,882 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:33:09,886 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:09,890 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:09,890 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:09,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:09,916 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:09,916 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-01-30 02:33:09,916 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 02:33:09,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 02:33:09,917 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:33:09,917 INFO L87 Difference]: Start difference. First operand 197 states and 237 transitions. Second operand 19 states. [2018-01-30 02:33:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:10,139 INFO L93 Difference]: Finished difference Result 304 states and 373 transitions. [2018-01-30 02:33:10,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 02:33:10,139 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2018-01-30 02:33:10,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:10,140 INFO L225 Difference]: With dead ends: 304 [2018-01-30 02:33:10,140 INFO L226 Difference]: Without dead ends: 246 [2018-01-30 02:33:10,140 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:33:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-30 02:33:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 206. [2018-01-30 02:33:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-30 02:33:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 248 transitions. [2018-01-30 02:33:10,145 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 248 transitions. Word has length 86 [2018-01-30 02:33:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:10,146 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 248 transitions. [2018-01-30 02:33:10,146 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 02:33:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 248 transitions. [2018-01-30 02:33:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-01-30 02:33:10,146 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:10,146 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 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] [2018-01-30 02:33:10,146 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1391919637, now seen corresponding path program 15 times [2018-01-30 02:33:10,147 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:10,147 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:10,147 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:10,147 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:10,147 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:10,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:10,325 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:10,325 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:33:10,332 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:33:10,336 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,337 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,338 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,338 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,339 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,340 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,341 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,341 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,342 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,343 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,344 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,345 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,345 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,346 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,348 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,348 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,349 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:10,350 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:10,351 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:10,380 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:10,380 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-01-30 02:33:10,380 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 02:33:10,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 02:33:10,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:33:10,380 INFO L87 Difference]: Start difference. First operand 206 states and 248 transitions. Second operand 20 states. [2018-01-30 02:33:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:10,584 INFO L93 Difference]: Finished difference Result 313 states and 384 transitions. [2018-01-30 02:33:10,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-30 02:33:10,584 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2018-01-30 02:33:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:10,585 INFO L225 Difference]: With dead ends: 313 [2018-01-30 02:33:10,585 INFO L226 Difference]: Without dead ends: 255 [2018-01-30 02:33:10,586 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 02:33:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-30 02:33:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 215. [2018-01-30 02:33:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-30 02:33:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 259 transitions. [2018-01-30 02:33:10,592 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 259 transitions. Word has length 90 [2018-01-30 02:33:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:10,592 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 259 transitions. [2018-01-30 02:33:10,593 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 02:33:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 259 transitions. [2018-01-30 02:33:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-30 02:33:10,593 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:10,593 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 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] [2018-01-30 02:33:10,593 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:10,593 INFO L82 PathProgramCache]: Analyzing trace with hash -855896897, now seen corresponding path program 16 times [2018-01-30 02:33:10,594 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:10,594 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:10,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:10,594 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:10,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:10,599 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:10,751 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:10,751 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 02:33:10,757 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:33:10,767 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:10,768 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:10,793 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:10,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-30 02:33:10,793 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 02:33:10,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 02:33:10,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:33:10,793 INFO L87 Difference]: Start difference. First operand 215 states and 259 transitions. Second operand 21 states. [2018-01-30 02:33:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:11,138 INFO L93 Difference]: Finished difference Result 322 states and 395 transitions. [2018-01-30 02:33:11,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 02:33:11,138 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2018-01-30 02:33:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:11,139 INFO L225 Difference]: With dead ends: 322 [2018-01-30 02:33:11,139 INFO L226 Difference]: Without dead ends: 264 [2018-01-30 02:33:11,139 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 02:33:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-30 02:33:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2018-01-30 02:33:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-01-30 02:33:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 270 transitions. [2018-01-30 02:33:11,146 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 270 transitions. Word has length 94 [2018-01-30 02:33:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:11,146 INFO L432 AbstractCegarLoop]: Abstraction has 224 states and 270 transitions. [2018-01-30 02:33:11,146 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 02:33:11,146 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 270 transitions. [2018-01-30 02:33:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-01-30 02:33:11,147 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:11,147 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 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] [2018-01-30 02:33:11,147 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:11,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1939631725, now seen corresponding path program 17 times [2018-01-30 02:33:11,147 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:11,147 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:11,148 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:11,148 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:11,148 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:11,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:11,733 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:11,733 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 02:33:11,738 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:33:11,740 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,747 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,756 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,765 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,766 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,767 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,767 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,768 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,770 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,771 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,771 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,772 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,774 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:11,778 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:11,779 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:11,813 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:11,813 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-01-30 02:33:11,814 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 02:33:11,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 02:33:11,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:33:11,814 INFO L87 Difference]: Start difference. First operand 224 states and 270 transitions. Second operand 22 states. [2018-01-30 02:33:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:12,380 INFO L93 Difference]: Finished difference Result 331 states and 406 transitions. [2018-01-30 02:33:12,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-30 02:33:12,382 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2018-01-30 02:33:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:12,383 INFO L225 Difference]: With dead ends: 331 [2018-01-30 02:33:12,383 INFO L226 Difference]: Without dead ends: 273 [2018-01-30 02:33:12,384 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 02:33:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-01-30 02:33:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 233. [2018-01-30 02:33:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-30 02:33:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 281 transitions. [2018-01-30 02:33:12,398 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 281 transitions. Word has length 98 [2018-01-30 02:33:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:12,398 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 281 transitions. [2018-01-30 02:33:12,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 02:33:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 281 transitions. [2018-01-30 02:33:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-01-30 02:33:12,399 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:12,399 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 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] [2018-01-30 02:33:12,399 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1877701529, now seen corresponding path program 18 times [2018-01-30 02:33:12,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:12,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:12,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:12,400 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:12,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:12,414 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:12,783 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:12,783 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 02:33:12,788 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:33:12,792 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,794 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,795 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,795 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,797 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,798 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,799 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,799 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,800 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,801 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,802 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,803 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,803 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,804 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,805 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,806 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,807 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:12,808 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:12,809 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:12,834 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:12,834 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-01-30 02:33:12,835 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 02:33:12,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 02:33:12,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:33:12,835 INFO L87 Difference]: Start difference. First operand 233 states and 281 transitions. Second operand 23 states. [2018-01-30 02:33:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:13,703 INFO L93 Difference]: Finished difference Result 340 states and 417 transitions. [2018-01-30 02:33:13,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 02:33:13,703 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2018-01-30 02:33:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:13,704 INFO L225 Difference]: With dead ends: 340 [2018-01-30 02:33:13,704 INFO L226 Difference]: Without dead ends: 282 [2018-01-30 02:33:13,705 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 02:33:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-30 02:33:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 242. [2018-01-30 02:33:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-01-30 02:33:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 292 transitions. [2018-01-30 02:33:13,711 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 292 transitions. Word has length 102 [2018-01-30 02:33:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:13,711 INFO L432 AbstractCegarLoop]: Abstraction has 242 states and 292 transitions. [2018-01-30 02:33:13,711 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 02:33:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 292 transitions. [2018-01-30 02:33:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-30 02:33:13,712 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:13,712 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 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] [2018-01-30 02:33:13,712 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:13,712 INFO L82 PathProgramCache]: Analyzing trace with hash 174325051, now seen corresponding path program 19 times [2018-01-30 02:33:13,712 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:13,712 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:13,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:13,713 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:13,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:13,717 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:13,883 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:13,883 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 02:33:13,888 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:13,898 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:13,924 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:13,924 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-01-30 02:33:13,924 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 02:33:13,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 02:33:13,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:33:13,925 INFO L87 Difference]: Start difference. First operand 242 states and 292 transitions. Second operand 24 states. [2018-01-30 02:33:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:14,380 INFO L93 Difference]: Finished difference Result 349 states and 428 transitions. [2018-01-30 02:33:14,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 02:33:14,380 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 106 [2018-01-30 02:33:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:14,381 INFO L225 Difference]: With dead ends: 349 [2018-01-30 02:33:14,381 INFO L226 Difference]: Without dead ends: 291 [2018-01-30 02:33:14,382 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 02:33:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-01-30 02:33:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 251. [2018-01-30 02:33:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-01-30 02:33:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 303 transitions. [2018-01-30 02:33:14,388 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 303 transitions. Word has length 106 [2018-01-30 02:33:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:14,388 INFO L432 AbstractCegarLoop]: Abstraction has 251 states and 303 transitions. [2018-01-30 02:33:14,388 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 02:33:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 303 transitions. [2018-01-30 02:33:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-30 02:33:14,389 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:14,389 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 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] [2018-01-30 02:33:14,389 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:14,389 INFO L82 PathProgramCache]: Analyzing trace with hash -81337329, now seen corresponding path program 20 times [2018-01-30 02:33:14,389 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:14,389 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:14,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:14,390 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:14,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:14,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:15,064 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:15,064 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 02:33:15,069 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:33:15,073 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:15,088 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:15,090 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:15,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:15,117 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:15,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-01-30 02:33:15,117 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 02:33:15,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 02:33:15,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:33:15,118 INFO L87 Difference]: Start difference. First operand 251 states and 303 transitions. Second operand 25 states. [2018-01-30 02:33:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:15,408 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2018-01-30 02:33:15,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 02:33:15,408 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 110 [2018-01-30 02:33:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:15,409 INFO L225 Difference]: With dead ends: 358 [2018-01-30 02:33:15,409 INFO L226 Difference]: Without dead ends: 300 [2018-01-30 02:33:15,410 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 02:33:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-30 02:33:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 260. [2018-01-30 02:33:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-01-30 02:33:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 314 transitions. [2018-01-30 02:33:15,417 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 314 transitions. Word has length 110 [2018-01-30 02:33:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:15,417 INFO L432 AbstractCegarLoop]: Abstraction has 260 states and 314 transitions. [2018-01-30 02:33:15,417 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 02:33:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 314 transitions. [2018-01-30 02:33:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-01-30 02:33:15,417 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:15,417 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 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] [2018-01-30 02:33:15,418 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1873952995, now seen corresponding path program 21 times [2018-01-30 02:33:15,418 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:15,418 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:15,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:15,418 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:15,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:15,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:15,838 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:15,838 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 02:33:15,843 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:33:15,847 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,848 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,848 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,849 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,850 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,851 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,851 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,852 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,853 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,855 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,856 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,857 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,858 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,859 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,860 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,860 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,861 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,862 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,863 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,864 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,865 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:15,865 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:15,867 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:15,902 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:15,902 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-01-30 02:33:15,902 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:33:15,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:33:15,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:33:15,903 INFO L87 Difference]: Start difference. First operand 260 states and 314 transitions. Second operand 26 states. [2018-01-30 02:33:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:16,333 INFO L93 Difference]: Finished difference Result 367 states and 450 transitions. [2018-01-30 02:33:16,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-30 02:33:16,337 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 114 [2018-01-30 02:33:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:16,338 INFO L225 Difference]: With dead ends: 367 [2018-01-30 02:33:16,338 INFO L226 Difference]: Without dead ends: 309 [2018-01-30 02:33:16,338 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 02:33:16,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-01-30 02:33:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 269. [2018-01-30 02:33:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-01-30 02:33:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 325 transitions. [2018-01-30 02:33:16,351 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 325 transitions. Word has length 114 [2018-01-30 02:33:16,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:16,351 INFO L432 AbstractCegarLoop]: Abstraction has 269 states and 325 transitions. [2018-01-30 02:33:16,351 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:33:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 325 transitions. [2018-01-30 02:33:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-30 02:33:16,352 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:16,352 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 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] [2018-01-30 02:33:16,352 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:16,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1025829961, now seen corresponding path program 22 times [2018-01-30 02:33:16,352 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:16,352 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:16,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:16,352 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:16,353 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:16,360 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:16,607 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:16,607 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 02:33:16,612 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:33:16,623 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:16,624 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:16,660 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:16,660 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-01-30 02:33:16,660 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 02:33:16,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 02:33:16,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:33:16,661 INFO L87 Difference]: Start difference. First operand 269 states and 325 transitions. Second operand 27 states. [2018-01-30 02:33:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:17,053 INFO L93 Difference]: Finished difference Result 376 states and 461 transitions. [2018-01-30 02:33:17,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 02:33:17,053 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 118 [2018-01-30 02:33:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:17,054 INFO L225 Difference]: With dead ends: 376 [2018-01-30 02:33:17,054 INFO L226 Difference]: Without dead ends: 318 [2018-01-30 02:33:17,055 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2018-01-30 02:33:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-01-30 02:33:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 278. [2018-01-30 02:33:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-01-30 02:33:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2018-01-30 02:33:17,067 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 118 [2018-01-30 02:33:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:17,067 INFO L432 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2018-01-30 02:33:17,067 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 02:33:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2018-01-30 02:33:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-01-30 02:33:17,068 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:17,068 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 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] [2018-01-30 02:33:17,068 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:17,068 INFO L82 PathProgramCache]: Analyzing trace with hash -587834229, now seen corresponding path program 23 times [2018-01-30 02:33:17,068 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:17,068 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:17,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:17,068 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:17,069 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:17,084 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:17,544 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:17,544 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 02:33:17,550 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:33:17,553 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,555 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,556 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,556 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,557 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,558 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,558 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,559 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,560 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,560 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,561 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,563 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,564 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,565 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,565 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,567 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,568 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,569 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,571 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,572 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,573 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,575 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:17,576 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:17,577 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:17,604 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:17,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-01-30 02:33:17,605 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 02:33:17,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 02:33:17,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-01-30 02:33:17,605 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand 28 states. [2018-01-30 02:33:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:17,982 INFO L93 Difference]: Finished difference Result 385 states and 472 transitions. [2018-01-30 02:33:17,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 02:33:17,982 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 122 [2018-01-30 02:33:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:17,983 INFO L225 Difference]: With dead ends: 385 [2018-01-30 02:33:17,983 INFO L226 Difference]: Without dead ends: 327 [2018-01-30 02:33:17,984 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 02:33:17,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-30 02:33:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 287. [2018-01-30 02:33:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-01-30 02:33:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 347 transitions. [2018-01-30 02:33:17,992 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 347 transitions. Word has length 122 [2018-01-30 02:33:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:17,992 INFO L432 AbstractCegarLoop]: Abstraction has 287 states and 347 transitions. [2018-01-30 02:33:17,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 02:33:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 347 transitions. [2018-01-30 02:33:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-01-30 02:33:17,993 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:17,993 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 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] [2018-01-30 02:33:17,993 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:17,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1943608159, now seen corresponding path program 24 times [2018-01-30 02:33:17,993 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:17,993 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:17,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:17,994 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:17,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:17,998 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:18,268 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:18,269 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:33:18,273 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:33:18,277 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,280 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,281 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,289 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,289 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,290 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,292 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,293 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,293 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,300 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,312 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,328 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,332 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,333 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,334 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,335 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,336 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,337 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,338 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:18,338 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:18,340 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:18,368 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:18,368 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-01-30 02:33:18,368 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 02:33:18,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 02:33:18,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:33:18,369 INFO L87 Difference]: Start difference. First operand 287 states and 347 transitions. Second operand 29 states. [2018-01-30 02:33:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:20,199 INFO L93 Difference]: Finished difference Result 394 states and 483 transitions. [2018-01-30 02:33:20,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-30 02:33:20,200 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 126 [2018-01-30 02:33:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:20,201 INFO L225 Difference]: With dead ends: 394 [2018-01-30 02:33:20,201 INFO L226 Difference]: Without dead ends: 336 [2018-01-30 02:33:20,201 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2018-01-30 02:33:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-30 02:33:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 296. [2018-01-30 02:33:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-01-30 02:33:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 358 transitions. [2018-01-30 02:33:20,210 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 358 transitions. Word has length 126 [2018-01-30 02:33:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:20,210 INFO L432 AbstractCegarLoop]: Abstraction has 296 states and 358 transitions. [2018-01-30 02:33:20,210 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 02:33:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 358 transitions. [2018-01-30 02:33:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-01-30 02:33:20,211 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:20,211 INFO L350 BasicCegarLoop]: trace histogram [27, 26, 26, 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] [2018-01-30 02:33:20,211 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:20,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1255690291, now seen corresponding path program 25 times [2018-01-30 02:33:20,211 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:20,211 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:20,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:20,212 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:20,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:20,216 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:20,880 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:20,880 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 02:33:20,885 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:20,897 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:20,925 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:20,925 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-01-30 02:33:20,926 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 02:33:20,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 02:33:20,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:33:20,926 INFO L87 Difference]: Start difference. First operand 296 states and 358 transitions. Second operand 30 states. [2018-01-30 02:33:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:21,315 INFO L93 Difference]: Finished difference Result 403 states and 494 transitions. [2018-01-30 02:33:21,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 02:33:21,315 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 130 [2018-01-30 02:33:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:21,316 INFO L225 Difference]: With dead ends: 403 [2018-01-30 02:33:21,316 INFO L226 Difference]: Without dead ends: 345 [2018-01-30 02:33:21,317 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 02:33:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-01-30 02:33:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 305. [2018-01-30 02:33:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-01-30 02:33:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 369 transitions. [2018-01-30 02:33:21,326 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 369 transitions. Word has length 130 [2018-01-30 02:33:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:21,326 INFO L432 AbstractCegarLoop]: Abstraction has 305 states and 369 transitions. [2018-01-30 02:33:21,326 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 02:33:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 369 transitions. [2018-01-30 02:33:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-30 02:33:21,327 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:21,327 INFO L350 BasicCegarLoop]: trace histogram [28, 27, 27, 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] [2018-01-30 02:33:21,327 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:21,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1925774087, now seen corresponding path program 26 times [2018-01-30 02:33:21,327 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:21,327 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:21,327 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:21,328 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:21,328 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:21,332 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:21,638 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:21,638 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 02:33:21,644 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:33:21,647 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:21,657 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:21,659 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:21,661 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:21,694 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:21,694 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-01-30 02:33:21,694 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 02:33:21,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 02:33:21,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:33:21,695 INFO L87 Difference]: Start difference. First operand 305 states and 369 transitions. Second operand 31 states. [2018-01-30 02:33:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:22,279 INFO L93 Difference]: Finished difference Result 412 states and 505 transitions. [2018-01-30 02:33:22,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:33:22,279 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 134 [2018-01-30 02:33:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:22,280 INFO L225 Difference]: With dead ends: 412 [2018-01-30 02:33:22,280 INFO L226 Difference]: Without dead ends: 354 [2018-01-30 02:33:22,281 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2018-01-30 02:33:22,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-01-30 02:33:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 314. [2018-01-30 02:33:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-01-30 02:33:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 380 transitions. [2018-01-30 02:33:22,301 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 380 transitions. Word has length 134 [2018-01-30 02:33:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:22,301 INFO L432 AbstractCegarLoop]: Abstraction has 314 states and 380 transitions. [2018-01-30 02:33:22,301 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 02:33:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 380 transitions. [2018-01-30 02:33:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-01-30 02:33:22,312 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:22,312 INFO L350 BasicCegarLoop]: trace histogram [29, 28, 28, 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] [2018-01-30 02:33:22,312 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1979704357, now seen corresponding path program 27 times [2018-01-30 02:33:22,312 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:22,312 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:22,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:22,313 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:22,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:22,318 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:22,690 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:22,690 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 02:33:22,695 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:33:22,700 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,701 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,701 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,702 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,703 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,704 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,704 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,705 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,706 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,706 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,707 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,708 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,709 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,710 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,711 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,712 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,713 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,714 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,715 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,716 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,717 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,718 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,719 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,720 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,721 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,722 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,723 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,725 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,726 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:22,726 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:22,728 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:22,763 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:22,763 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-01-30 02:33:22,763 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 02:33:22,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 02:33:22,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:33:22,764 INFO L87 Difference]: Start difference. First operand 314 states and 380 transitions. Second operand 32 states. [2018-01-30 02:33:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:23,232 INFO L93 Difference]: Finished difference Result 421 states and 516 transitions. [2018-01-30 02:33:23,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-30 02:33:23,232 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 138 [2018-01-30 02:33:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:23,233 INFO L225 Difference]: With dead ends: 421 [2018-01-30 02:33:23,233 INFO L226 Difference]: Without dead ends: 363 [2018-01-30 02:33:23,234 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 02:33:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-01-30 02:33:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 323. [2018-01-30 02:33:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-01-30 02:33:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 391 transitions. [2018-01-30 02:33:23,245 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 391 transitions. Word has length 138 [2018-01-30 02:33:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:23,245 INFO L432 AbstractCegarLoop]: Abstraction has 323 states and 391 transitions. [2018-01-30 02:33:23,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 02:33:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 391 transitions. [2018-01-30 02:33:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-30 02:33:23,245 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:23,246 INFO L350 BasicCegarLoop]: trace histogram [30, 29, 29, 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] [2018-01-30 02:33:23,246 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash -61689169, now seen corresponding path program 28 times [2018-01-30 02:33:23,246 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:23,246 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:23,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:23,246 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:23,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:23,251 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:23,590 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:23,590 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 02:33:23,596 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:33:23,617 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:23,619 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:23,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:23,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-01-30 02:33:23,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 02:33:23,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 02:33:23,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 02:33:23,658 INFO L87 Difference]: Start difference. First operand 323 states and 391 transitions. Second operand 33 states. [2018-01-30 02:33:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:24,138 INFO L93 Difference]: Finished difference Result 430 states and 527 transitions. [2018-01-30 02:33:24,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 02:33:24,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 142 [2018-01-30 02:33:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:24,139 INFO L225 Difference]: With dead ends: 430 [2018-01-30 02:33:24,139 INFO L226 Difference]: Without dead ends: 372 [2018-01-30 02:33:24,140 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2018-01-30 02:33:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-01-30 02:33:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 332. [2018-01-30 02:33:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-01-30 02:33:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 402 transitions. [2018-01-30 02:33:24,150 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 402 transitions. Word has length 142 [2018-01-30 02:33:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:24,150 INFO L432 AbstractCegarLoop]: Abstraction has 332 states and 402 transitions. [2018-01-30 02:33:24,150 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 02:33:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 402 transitions. [2018-01-30 02:33:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-01-30 02:33:24,151 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:24,151 INFO L350 BasicCegarLoop]: trace histogram [31, 30, 30, 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] [2018-01-30 02:33:24,151 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1125498755, now seen corresponding path program 29 times [2018-01-30 02:33:24,151 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:24,151 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:24,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:24,152 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:24,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:24,157 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:24,620 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:24,620 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 02:33:24,626 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:33:24,629 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,635 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,645 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,655 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,671 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,672 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,672 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,673 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,674 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,674 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,675 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,676 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,676 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,678 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,680 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,681 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,683 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,683 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,684 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,685 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,687 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,688 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,690 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,692 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:24,693 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:24,694 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 89 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:25,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:25,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35] total 66 [2018-01-30 02:33:25,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-30 02:33:25,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-30 02:33:25,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290 [2018-01-30 02:33:25,465 INFO L87 Difference]: Start difference. First operand 332 states and 402 transitions. Second operand 66 states. [2018-01-30 02:33:25,939 WARN L143 SmtUtils]: Spent 105ms on a formula simplification that was a NOOP. DAG size: 9 [2018-01-30 02:33:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:48,219 INFO L93 Difference]: Finished difference Result 3575 states and 4378 transitions. [2018-01-30 02:33:48,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 591 states. [2018-01-30 02:33:48,219 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 146 [2018-01-30 02:33:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:48,227 INFO L225 Difference]: With dead ends: 3575 [2018-01-30 02:33:48,227 INFO L226 Difference]: Without dead ends: 3517 [2018-01-30 02:33:48,242 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 621 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226825 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=112781, Invalid=274725, Unknown=0, NotChecked=0, Total=387506 [2018-01-30 02:33:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2018-01-30 02:33:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2180. [2018-01-30 02:33:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2018-01-30 02:33:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2721 transitions. [2018-01-30 02:33:48,293 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2721 transitions. Word has length 146 [2018-01-30 02:33:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:48,293 INFO L432 AbstractCegarLoop]: Abstraction has 2180 states and 2721 transitions. [2018-01-30 02:33:48,293 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-30 02:33:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2721 transitions. [2018-01-30 02:33:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-30 02:33:48,295 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:48,295 INFO L350 BasicCegarLoop]: trace histogram [32, 31, 31, 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] [2018-01-30 02:33:48,295 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:48,295 INFO L82 PathProgramCache]: Analyzing trace with hash 622740055, now seen corresponding path program 30 times [2018-01-30 02:33:48,295 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:48,295 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:48,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:48,296 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:48,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:48,301 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:48,731 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:48,731 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 02:33:48,736 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:33:48,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,744 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,745 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,745 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,746 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,747 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,748 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,749 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,749 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,750 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,751 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,752 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,753 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,756 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,757 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,758 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,759 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,760 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,761 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,762 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,762 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,768 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,769 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,770 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,771 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,772 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,774 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,775 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:48,776 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:48,778 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:48,809 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:48,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-01-30 02:33:48,809 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 02:33:48,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 02:33:48,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:33:48,810 INFO L87 Difference]: Start difference. First operand 2180 states and 2721 transitions. Second operand 35 states. [2018-01-30 02:33:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:49,495 INFO L93 Difference]: Finished difference Result 2456 states and 3110 transitions. [2018-01-30 02:33:49,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-30 02:33:49,495 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 150 [2018-01-30 02:33:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:49,499 INFO L225 Difference]: With dead ends: 2456 [2018-01-30 02:33:49,499 INFO L226 Difference]: Without dead ends: 2398 [2018-01-30 02:33:49,500 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2018-01-30 02:33:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2018-01-30 02:33:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2189. [2018-01-30 02:33:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2189 states. [2018-01-30 02:33:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2732 transitions. [2018-01-30 02:33:49,583 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 2732 transitions. Word has length 150 [2018-01-30 02:33:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:49,583 INFO L432 AbstractCegarLoop]: Abstraction has 2189 states and 2732 transitions. [2018-01-30 02:33:49,583 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 02:33:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 2732 transitions. [2018-01-30 02:33:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-01-30 02:33:49,585 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:49,585 INFO L350 BasicCegarLoop]: trace histogram [33, 32, 32, 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] [2018-01-30 02:33:49,585 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:49,585 INFO L82 PathProgramCache]: Analyzing trace with hash -155108565, now seen corresponding path program 31 times [2018-01-30 02:33:49,585 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:49,585 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:49,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:49,586 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:49,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:49,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:50,202 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:50,203 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 02:33:50,207 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:50,220 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:50,252 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:50,252 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-01-30 02:33:50,253 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 02:33:50,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 02:33:50,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 02:33:50,253 INFO L87 Difference]: Start difference. First operand 2189 states and 2732 transitions. Second operand 36 states. [2018-01-30 02:33:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:50,891 INFO L93 Difference]: Finished difference Result 2465 states and 3121 transitions. [2018-01-30 02:33:50,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 02:33:50,892 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 154 [2018-01-30 02:33:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:50,895 INFO L225 Difference]: With dead ends: 2465 [2018-01-30 02:33:50,896 INFO L226 Difference]: Without dead ends: 2407 [2018-01-30 02:33:50,896 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2018-01-30 02:33:50,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2018-01-30 02:33:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2198. [2018-01-30 02:33:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2018-01-30 02:33:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 2743 transitions. [2018-01-30 02:33:50,930 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 2743 transitions. Word has length 154 [2018-01-30 02:33:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:50,931 INFO L432 AbstractCegarLoop]: Abstraction has 2198 states and 2743 transitions. [2018-01-30 02:33:50,931 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 02:33:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 2743 transitions. [2018-01-30 02:33:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-30 02:33:50,933 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:50,933 INFO L350 BasicCegarLoop]: trace histogram [34, 33, 33, 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] [2018-01-30 02:33:50,933 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:50,933 INFO L82 PathProgramCache]: Analyzing trace with hash -640439809, now seen corresponding path program 32 times [2018-01-30 02:33:50,933 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:50,933 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:50,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:50,934 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:33:50,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:50,939 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:52,368 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:52,368 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:33:52,372 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:33:52,381 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:52,402 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:52,415 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:52,417 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:52,449 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:52,449 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-30 02:33:52,449 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 02:33:52,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 02:33:52,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 02:33:52,449 INFO L87 Difference]: Start difference. First operand 2198 states and 2743 transitions. Second operand 37 states. [2018-01-30 02:33:53,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:53,365 INFO L93 Difference]: Finished difference Result 2474 states and 3132 transitions. [2018-01-30 02:33:53,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-30 02:33:53,366 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 158 [2018-01-30 02:33:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:53,370 INFO L225 Difference]: With dead ends: 2474 [2018-01-30 02:33:53,370 INFO L226 Difference]: Without dead ends: 2416 [2018-01-30 02:33:53,371 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2018-01-30 02:33:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2018-01-30 02:33:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2207. [2018-01-30 02:33:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2207 states. [2018-01-30 02:33:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2754 transitions. [2018-01-30 02:33:53,407 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2754 transitions. Word has length 158 [2018-01-30 02:33:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:53,407 INFO L432 AbstractCegarLoop]: Abstraction has 2207 states and 2754 transitions. [2018-01-30 02:33:53,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 02:33:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2754 transitions. [2018-01-30 02:33:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-01-30 02:33:53,411 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:53,411 INFO L350 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 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 02:33:53,411 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:53,411 INFO L82 PathProgramCache]: Analyzing trace with hash -39153965, now seen corresponding path program 33 times [2018-01-30 02:33:53,411 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:53,411 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:53,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:53,411 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:53,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:53,417 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:54,045 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:54,045 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:33:54,050 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:33:54,053 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,054 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,055 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,056 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,057 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,057 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,058 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,059 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,060 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,060 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,061 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,062 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,063 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,064 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,064 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,065 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,066 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,067 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,068 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,069 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,070 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,071 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,072 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,073 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,074 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,075 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,076 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,077 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,078 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,079 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,080 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,081 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,082 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,083 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,084 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:33:54,085 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:54,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:54,119 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:54,119 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-01-30 02:33:54,119 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-30 02:33:54,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-30 02:33:54,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 02:33:54,120 INFO L87 Difference]: Start difference. First operand 2207 states and 2754 transitions. Second operand 38 states. [2018-01-30 02:33:54,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:54,759 INFO L93 Difference]: Finished difference Result 2483 states and 3143 transitions. [2018-01-30 02:33:54,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-30 02:33:54,766 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 162 [2018-01-30 02:33:54,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:54,770 INFO L225 Difference]: With dead ends: 2483 [2018-01-30 02:33:54,770 INFO L226 Difference]: Without dead ends: 2425 [2018-01-30 02:33:54,771 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2018-01-30 02:33:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2018-01-30 02:33:54,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2216. [2018-01-30 02:33:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2018-01-30 02:33:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 2765 transitions. [2018-01-30 02:33:54,808 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 2765 transitions. Word has length 162 [2018-01-30 02:33:54,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:54,808 INFO L432 AbstractCegarLoop]: Abstraction has 2216 states and 2765 transitions. [2018-01-30 02:33:54,808 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-30 02:33:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 2765 transitions. [2018-01-30 02:33:54,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-30 02:33:54,810 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:54,810 INFO L350 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 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 02:33:54,810 INFO L371 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash -551884377, now seen corresponding path program 34 times [2018-01-30 02:33:54,810 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:54,811 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:54,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:54,811 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:54,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:54,817 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:55,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:55,558 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:33:55,562 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:33:55,577 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:55,579 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:55,612 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:55,612 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-01-30 02:33:55,612 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 02:33:55,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 02:33:55,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 02:33:55,613 INFO L87 Difference]: Start difference. First operand 2216 states and 2765 transitions. Second operand 39 states. [2018-01-30 02:33:56,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:56,873 INFO L93 Difference]: Finished difference Result 2492 states and 3154 transitions. [2018-01-30 02:33:56,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 02:33:56,873 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 166 [2018-01-30 02:33:56,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:56,877 INFO L225 Difference]: With dead ends: 2492 [2018-01-30 02:33:56,877 INFO L226 Difference]: Without dead ends: 2434 [2018-01-30 02:33:56,878 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2018-01-30 02:33:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2018-01-30 02:33:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2225. [2018-01-30 02:33:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2225 states. [2018-01-30 02:33:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2776 transitions. [2018-01-30 02:33:56,914 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2776 transitions. Word has length 166 [2018-01-30 02:33:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:56,914 INFO L432 AbstractCegarLoop]: Abstraction has 2225 states and 2776 transitions. [2018-01-30 02:33:56,914 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 02:33:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2776 transitions. [2018-01-30 02:33:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-01-30 02:33:56,916 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:56,916 INFO L350 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 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 02:33:56,916 INFO L371 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:56,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2005288325, now seen corresponding path program 35 times [2018-01-30 02:33:56,916 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:56,916 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:56,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:56,918 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:56,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:56,924 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:57,497 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:57,497 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:33:57,501 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:33:57,504 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,505 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,507 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,507 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,508 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,509 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,509 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,510 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,511 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,511 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,512 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,513 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,514 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,514 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,515 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,516 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,517 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,518 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,519 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,519 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,520 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,521 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,522 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,523 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,524 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,524 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,525 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,526 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,527 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,528 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,529 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,530 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,531 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,532 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,535 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:33:57,535 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:57,537 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:57,570 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:57,571 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-01-30 02:33:57,571 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-30 02:33:57,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-30 02:33:57,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 02:33:57,571 INFO L87 Difference]: Start difference. First operand 2225 states and 2776 transitions. Second operand 40 states. [2018-01-30 02:33:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:58,247 INFO L93 Difference]: Finished difference Result 2501 states and 3165 transitions. [2018-01-30 02:33:58,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 02:33:58,247 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 170 [2018-01-30 02:33:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:58,252 INFO L225 Difference]: With dead ends: 2501 [2018-01-30 02:33:58,252 INFO L226 Difference]: Without dead ends: 2443 [2018-01-30 02:33:58,253 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2018-01-30 02:33:58,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2018-01-30 02:33:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2234. [2018-01-30 02:33:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2018-01-30 02:33:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2787 transitions. [2018-01-30 02:33:58,290 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2787 transitions. Word has length 170 [2018-01-30 02:33:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:58,290 INFO L432 AbstractCegarLoop]: Abstraction has 2234 states and 2787 transitions. [2018-01-30 02:33:58,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-30 02:33:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2787 transitions. [2018-01-30 02:33:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-30 02:33:58,292 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:58,292 INFO L350 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 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 02:33:58,292 INFO L371 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:58,292 INFO L82 PathProgramCache]: Analyzing trace with hash -778305201, now seen corresponding path program 36 times [2018-01-30 02:33:58,292 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:58,292 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:58,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:58,293 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:58,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:58,298 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:33:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:58,817 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:33:58,817 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:33:58,821 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:33:58,825 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,832 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,841 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,850 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,868 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,870 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,871 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,872 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,875 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,876 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,879 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,880 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,880 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,881 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,883 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,884 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,885 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,886 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,887 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,889 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,890 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,891 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,892 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,893 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,895 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,896 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,898 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:33:58,899 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:33:58,901 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:33:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:33:58,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:33:58,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-01-30 02:33:58,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-30 02:33:58,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-30 02:33:58,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 02:33:58,936 INFO L87 Difference]: Start difference. First operand 2234 states and 2787 transitions. Second operand 41 states. [2018-01-30 02:33:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:33:59,569 INFO L93 Difference]: Finished difference Result 2510 states and 3176 transitions. [2018-01-30 02:33:59,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 02:33:59,569 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 174 [2018-01-30 02:33:59,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:33:59,574 INFO L225 Difference]: With dead ends: 2510 [2018-01-30 02:33:59,574 INFO L226 Difference]: Without dead ends: 2452 [2018-01-30 02:33:59,575 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2018-01-30 02:33:59,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2018-01-30 02:33:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2243. [2018-01-30 02:33:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2018-01-30 02:33:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2798 transitions. [2018-01-30 02:33:59,613 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2798 transitions. Word has length 174 [2018-01-30 02:33:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:33:59,613 INFO L432 AbstractCegarLoop]: Abstraction has 2243 states and 2798 transitions. [2018-01-30 02:33:59,614 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-30 02:33:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2798 transitions. [2018-01-30 02:33:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-01-30 02:33:59,615 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:33:59,616 INFO L350 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 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 02:33:59,616 INFO L371 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:33:59,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1613316573, now seen corresponding path program 37 times [2018-01-30 02:33:59,616 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:33:59,616 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:33:59,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:59,616 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:33:59,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:33:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:33:59,622 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:34:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:00,881 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:34:00,881 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:34:00,886 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:34:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:34:00,900 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:34:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:00,938 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:34:00,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-01-30 02:34:00,939 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 02:34:00,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 02:34:00,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:34:00,939 INFO L87 Difference]: Start difference. First operand 2243 states and 2798 transitions. Second operand 42 states. [2018-01-30 02:34:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:34:02,327 INFO L93 Difference]: Finished difference Result 2519 states and 3187 transitions. [2018-01-30 02:34:02,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 02:34:02,328 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 178 [2018-01-30 02:34:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:34:02,331 INFO L225 Difference]: With dead ends: 2519 [2018-01-30 02:34:02,331 INFO L226 Difference]: Without dead ends: 2461 [2018-01-30 02:34:02,332 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 02:34:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2018-01-30 02:34:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2252. [2018-01-30 02:34:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2018-01-30 02:34:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 2809 transitions. [2018-01-30 02:34:02,371 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 2809 transitions. Word has length 178 [2018-01-30 02:34:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:34:02,372 INFO L432 AbstractCegarLoop]: Abstraction has 2252 states and 2809 transitions. [2018-01-30 02:34:02,372 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 02:34:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 2809 transitions. [2018-01-30 02:34:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-30 02:34:02,373 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:34:02,374 INFO L350 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 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 02:34:02,374 INFO L371 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:34:02,374 INFO L82 PathProgramCache]: Analyzing trace with hash 637464823, now seen corresponding path program 38 times [2018-01-30 02:34:02,374 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:34:02,374 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:34:02,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:34:02,374 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:34:02,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:34:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:34:02,380 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:34:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:03,338 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:34:03,338 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:34:03,343 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:34:03,352 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:34:03,360 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:34:03,362 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:34:03,363 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:34:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:03,402 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:34:03,402 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-01-30 02:34:03,402 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-30 02:34:03,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-30 02:34:03,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 02:34:03,403 INFO L87 Difference]: Start difference. First operand 2252 states and 2809 transitions. Second operand 43 states. [2018-01-30 02:34:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:34:04,149 INFO L93 Difference]: Finished difference Result 2528 states and 3198 transitions. [2018-01-30 02:34:04,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-30 02:34:04,149 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2018-01-30 02:34:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:34:04,151 INFO L225 Difference]: With dead ends: 2528 [2018-01-30 02:34:04,151 INFO L226 Difference]: Without dead ends: 2470 [2018-01-30 02:34:04,152 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2018-01-30 02:34:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2018-01-30 02:34:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2261. [2018-01-30 02:34:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2018-01-30 02:34:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2820 transitions. [2018-01-30 02:34:04,191 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2820 transitions. Word has length 182 [2018-01-30 02:34:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:34:04,191 INFO L432 AbstractCegarLoop]: Abstraction has 2261 states and 2820 transitions. [2018-01-30 02:34:04,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-30 02:34:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2820 transitions. [2018-01-30 02:34:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-01-30 02:34:04,193 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:34:04,193 INFO L350 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 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 02:34:04,193 INFO L371 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:34:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 610900427, now seen corresponding path program 39 times [2018-01-30 02:34:04,194 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:34:04,194 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:34:04,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:34:04,194 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:34:04,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:34:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:34:04,200 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:34:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:04,728 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:34:04,728 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:34:04,732 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:34:04,736 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,737 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,738 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,739 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,740 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,740 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,741 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,742 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,743 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,743 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,744 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,745 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,746 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,747 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,747 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,748 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,750 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,751 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,752 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,753 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,754 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,755 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,755 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,756 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,757 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,758 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,759 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,760 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,761 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,762 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,764 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,765 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,766 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,767 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,768 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,769 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,770 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,771 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,772 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,774 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,775 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:34:04,775 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:34:04,777 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:34:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:04,813 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:34:04,813 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-01-30 02:34:04,813 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-30 02:34:04,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-30 02:34:04,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 02:34:04,814 INFO L87 Difference]: Start difference. First operand 2261 states and 2820 transitions. Second operand 44 states. [2018-01-30 02:34:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:34:05,518 INFO L93 Difference]: Finished difference Result 2537 states and 3209 transitions. [2018-01-30 02:34:05,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-30 02:34:05,518 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 186 [2018-01-30 02:34:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:34:05,520 INFO L225 Difference]: With dead ends: 2537 [2018-01-30 02:34:05,520 INFO L226 Difference]: Without dead ends: 2479 [2018-01-30 02:34:05,521 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2018-01-30 02:34:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2018-01-30 02:34:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2270. [2018-01-30 02:34:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2018-01-30 02:34:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 2831 transitions. [2018-01-30 02:34:05,561 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 2831 transitions. Word has length 186 [2018-01-30 02:34:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:34:05,561 INFO L432 AbstractCegarLoop]: Abstraction has 2270 states and 2831 transitions. [2018-01-30 02:34:05,562 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-30 02:34:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 2831 transitions. [2018-01-30 02:34:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-30 02:34:05,563 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:34:05,563 INFO L350 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 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 02:34:05,563 INFO L371 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:34:05,564 INFO L82 PathProgramCache]: Analyzing trace with hash 686536863, now seen corresponding path program 40 times [2018-01-30 02:34:05,564 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:34:05,564 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:34:05,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:34:05,564 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:34:05,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:34:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:34:05,570 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:34:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:06,242 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:34:06,242 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:34:06,260 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:34:06,287 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:34:06,289 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:34:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:34:06,345 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:34:06,345 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-01-30 02:34:06,345 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-30 02:34:06,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-30 02:34:06,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 02:34:06,346 INFO L87 Difference]: Start difference. First operand 2270 states and 2831 transitions. Second operand 45 states. Received shutdown request... [2018-01-30 02:34:06,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 02:34:06,501 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 02:34:06,504 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 02:34:06,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:34:06 BasicIcfg [2018-01-30 02:34:06,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 02:34:06,505 INFO L168 Benchmark]: Toolchain (without parser) took 65303.96 ms. Allocated memory was 151.0 MB in the beginning and 911.2 MB in the end (delta: 760.2 MB). Free memory was 116.0 MB in the beginning and 732.4 MB in the end (delta: -616.4 MB). Peak memory consumption was 143.8 MB. Max. memory is 5.3 GB. [2018-01-30 02:34:06,509 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 151.0 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 02:34:06,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 107.32 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 5.3 GB. [2018-01-30 02:34:06,509 INFO L168 Benchmark]: Boogie Preprocessor took 18.20 ms. Allocated memory is still 151.0 MB. Free memory was 107.4 MB in the beginning and 105.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-01-30 02:34:06,509 INFO L168 Benchmark]: RCFGBuilder took 319.65 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 89.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 5.3 GB. [2018-01-30 02:34:06,509 INFO L168 Benchmark]: IcfgTransformer took 12.88 ms. Allocated memory is still 151.0 MB. Free memory was 89.4 MB in the beginning and 88.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:34:06,509 INFO L168 Benchmark]: TraceAbstraction took 64843.62 ms. Allocated memory was 151.0 MB in the beginning and 911.2 MB in the end (delta: 760.2 MB). Free memory was 87.9 MB in the beginning and 732.4 MB in the end (delta: -644.5 MB). Peak memory consumption was 115.7 MB. Max. memory is 5.3 GB. [2018-01-30 02:34:06,510 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 120.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 107.32 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.20 ms. Allocated memory is still 151.0 MB. Free memory was 107.4 MB in the beginning and 105.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 319.65 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 89.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 5.3 GB. * IcfgTransformer took 12.88 ms. Allocated memory is still 151.0 MB. Free memory was 89.4 MB in the beginning and 88.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 64843.62 ms. Allocated memory was 151.0 MB in the beginning and 911.2 MB in the end (delta: 760.2 MB). Free memory was 87.9 MB in the beginning and 732.4 MB in the end (delta: -644.5 MB). Peak memory consumption was 115.7 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 (2270states) and interpolant automaton (currently 16 states, 45 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. TIMEOUT Result, 64.8s OverallTime, 45 OverallIterations, 42 TraceHistogramMax, 43.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3068 SDtfs, 11429 SDslu, 54018 SDs, 0 SdLazy, 30724 SolverSat, 1211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6907 GetRequests, 4527 SyntacticMatches, 0 SemanticMatches, 2379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237921 ImplicationChecksByTransitivity, 38.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2270occurred in iteration=44, 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: 0.7s AutomataMinimizationTime, 44 MinimizatonAttempts, 4677 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 9113 NumberOfCodeBlocks, 9113 NumberOfCodeBlocksAsserted, 512 NumberOfCheckSat, 9027 ConstructedInterpolants, 0 QuantifiedInterpolants, 3295225 SizeOfPredicates, 83 NumberOfNonLiveVariables, 6109 ConjunctsInSsa, 985 ConjunctsInUnsatCore, 86 InterpolantComputations, 4 PerfectInterpolantSequences, 91/95286 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/sorting_selectionsort_false-unreach-call2_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_02-34-06-515.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sorting_selectionsort_false-unreach-call2_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_02-34-06-515.csv Completed graceful shutdown