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-industry-pattern/array_ptr_single_elem_init_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 04:13:31,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 04:13:31,591 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 04:13:31,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 04:13:31,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 04:13:31,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 04:13:31,605 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 04:13:31,607 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 04:13:31,608 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 04:13:31,609 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 04:13:31,609 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 04:13:31,609 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 04:13:31,610 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 04:13:31,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 04:13:31,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 04:13:31,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 04:13:31,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 04:13:31,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 04:13:31,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 04:13:31,620 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 04:13:31,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 04:13:31,625 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 04:13:31,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 04:13:31,626 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 04:13:31,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 04:13:31,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 04:13:31,636 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 04:13:31,636 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 04:13:31,636 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 04:13:31,637 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 04:13:31,637 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 04:13:31,637 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 04:13:31,637 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 04:13:31,637 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 04:13:31,637 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 04:13:31,637 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 04:13:31,637 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 04:13:31,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 04:13:31,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 04:13:31,639 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 04:13:31,639 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 04:13:31,639 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 04:13:31,639 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 04:13:31,639 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 04:13:31,639 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 04:13:31,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 04:13:31,639 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 04:13:31,640 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 04:13:31,640 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 04:13:31,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 04:13:31,676 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 04:13:31,678 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 04:13:31,679 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 04:13:31,679 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 04:13:31,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_ptr_single_elem_init_false-unreach-call_true-termination.i [2018-01-30 04:13:31,751 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 04:13:31,752 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 04:13:31,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 04:13:31,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 04:13:31,756 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 04:13:31,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1b5fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31, skipping insertion in model container [2018-01-30 04:13:31,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,770 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 04:13:31,780 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 04:13:31,850 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 04:13:31,859 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 04:13:31,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31 WrapperNode [2018-01-30 04:13:31,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 04:13:31,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 04:13:31,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 04:13:31,862 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 04:13:31,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (1/1) ... [2018-01-30 04:13:31,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 04:13:31,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 04:13:31,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 04:13:31,879 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 04:13:31,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (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 04:13:31,911 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 04:13:31,911 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 04:13:31,911 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 04:13:31,911 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 04:13:31,911 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 04:13:31,911 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 04:13:31,911 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 04:13:31,911 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 04:13:31,911 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 04:13:31,912 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 04:13:32,175 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 04:13:32,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 04:13:32 BoogieIcfgContainer [2018-01-30 04:13:32,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 04:13:32,176 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 04:13:32,176 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 04:13:32,176 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 04:13:32,178 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 04:13:32" (1/1) ... [2018-01-30 04:13:32,180 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 04:13:32,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 04:13:32 BasicIcfg [2018-01-30 04:13:32,187 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 04:13:32,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 04:13:32,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 04:13:32,189 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 04:13:32,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 04:13:31" (1/4) ... [2018-01-30 04:13:32,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4913c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 04:13:32, skipping insertion in model container [2018-01-30 04:13:32,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 04:13:31" (2/4) ... [2018-01-30 04:13:32,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4913c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 04:13:32, skipping insertion in model container [2018-01-30 04:13:32,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 04:13:32" (3/4) ... [2018-01-30 04:13:32,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4913c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 04:13:32, skipping insertion in model container [2018-01-30 04:13:32,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 04:13:32" (4/4) ... [2018-01-30 04:13:32,191 INFO L107 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init_false-unreach-call_true-termination.ileft_unchanged_by_heapseparator [2018-01-30 04:13:32,196 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 04:13:32,201 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 04:13:32,223 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 04:13:32,223 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 04:13:32,223 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 04:13:32,224 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 04:13:32,224 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 04:13:32,224 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 04:13:32,224 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 04:13:32,224 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 04:13:32,224 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 04:13:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-30 04:13:32,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-30 04:13:32,236 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:32,237 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 04:13:32,237 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:32,240 INFO L82 PathProgramCache]: Analyzing trace with hash 694418343, now seen corresponding path program 1 times [2018-01-30 04:13:32,241 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:32,241 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:32,268 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:32,268 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:32,269 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:32,288 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:32,302 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 04:13:32,304 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 04:13:32,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 04:13:32,305 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 04:13:32,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 04:13:32,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 04:13:32,314 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-01-30 04:13:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:32,326 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2018-01-30 04:13:32,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 04:13:32,327 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-30 04:13:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:32,332 INFO L225 Difference]: With dead ends: 65 [2018-01-30 04:13:32,332 INFO L226 Difference]: Without dead ends: 40 [2018-01-30 04:13:32,334 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 04:13:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-30 04:13:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-01-30 04:13:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-30 04:13:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-01-30 04:13:32,355 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 19 [2018-01-30 04:13:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:32,355 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-01-30 04:13:32,355 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 04:13:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-01-30 04:13:32,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-30 04:13:32,356 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:32,356 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 04:13:32,356 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:32,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1269275865, now seen corresponding path program 1 times [2018-01-30 04:13:32,357 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:32,357 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:32,357 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:32,357 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:32,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:32,366 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:32,476 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 04:13:32,476 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 04:13:32,476 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 04:13:32,477 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 04:13:32,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 04:13:32,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 04:13:32,477 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 3 states. [2018-01-30 04:13:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:32,697 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2018-01-30 04:13:32,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 04:13:32,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-30 04:13:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:32,698 INFO L225 Difference]: With dead ends: 75 [2018-01-30 04:13:32,698 INFO L226 Difference]: Without dead ends: 60 [2018-01-30 04:13:32,699 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 04:13:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-30 04:13:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 45. [2018-01-30 04:13:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-01-30 04:13:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-01-30 04:13:32,703 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2018-01-30 04:13:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:32,703 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-01-30 04:13:32,703 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 04:13:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-01-30 04:13:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-30 04:13:32,704 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:32,704 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:32,704 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1126520834, now seen corresponding path program 1 times [2018-01-30 04:13:32,704 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:32,704 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:32,705 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:32,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:32,705 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:32,716 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 04:13:32,803 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:32,803 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:13:32,818 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:32,842 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 04:13:32,989 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:32,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-01-30 04:13:32,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 04:13:32,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 04:13:32,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-30 04:13:32,990 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2018-01-30 04:13:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:33,183 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2018-01-30 04:13:33,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 04:13:33,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-01-30 04:13:33,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:33,184 INFO L225 Difference]: With dead ends: 100 [2018-01-30 04:13:33,184 INFO L226 Difference]: Without dead ends: 82 [2018-01-30 04:13:33,184 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-01-30 04:13:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-01-30 04:13:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 67. [2018-01-30 04:13:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-30 04:13:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2018-01-30 04:13:33,188 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 37 [2018-01-30 04:13:33,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:33,188 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2018-01-30 04:13:33,188 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 04:13:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2018-01-30 04:13:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-01-30 04:13:33,189 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:33,189 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:33,189 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:33,190 INFO L82 PathProgramCache]: Analyzing trace with hash -928512665, now seen corresponding path program 2 times [2018-01-30 04:13:33,190 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:33,190 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:33,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:33,191 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:33,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:33,199 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-30 04:13:33,275 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:33,275 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 04:13:33,289 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 04:13:33,297 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:33,308 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:33,313 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:33,314 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-30 04:13:33,361 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:33,361 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-01-30 04:13:33,361 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 04:13:33,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 04:13:33,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-01-30 04:13:33,362 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 10 states. [2018-01-30 04:13:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:33,916 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2018-01-30 04:13:33,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 04:13:33,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-01-30 04:13:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:33,917 INFO L225 Difference]: With dead ends: 128 [2018-01-30 04:13:33,917 INFO L226 Difference]: Without dead ends: 104 [2018-01-30 04:13:33,918 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2018-01-30 04:13:33,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-01-30 04:13:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 89. [2018-01-30 04:13:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-30 04:13:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2018-01-30 04:13:33,922 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 54 [2018-01-30 04:13:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:33,922 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2018-01-30 04:13:33,922 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 04:13:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2018-01-30 04:13:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-30 04:13:33,923 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:33,923 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:33,923 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1905281150, now seen corresponding path program 3 times [2018-01-30 04:13:33,924 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:33,924 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:33,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:33,928 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:33,929 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:33,940 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 04:13:34,059 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:34,059 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 04:13:34,064 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 04:13:34,072 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:34,074 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:34,092 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:34,098 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:34,099 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:34,100 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-30 04:13:34,166 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:34,167 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-01-30 04:13:34,167 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 04:13:34,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 04:13:34,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-01-30 04:13:34,167 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 13 states. [2018-01-30 04:13:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:34,502 INFO L93 Difference]: Finished difference Result 156 states and 178 transitions. [2018-01-30 04:13:34,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 04:13:34,506 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2018-01-30 04:13:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:34,506 INFO L225 Difference]: With dead ends: 156 [2018-01-30 04:13:34,507 INFO L226 Difference]: Without dead ends: 126 [2018-01-30 04:13:34,507 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2018-01-30 04:13:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-30 04:13:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2018-01-30 04:13:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-01-30 04:13:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2018-01-30 04:13:34,512 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 71 [2018-01-30 04:13:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:34,512 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2018-01-30 04:13:34,512 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 04:13:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2018-01-30 04:13:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-01-30 04:13:34,513 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:34,513 INFO L350 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:34,513 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 901742503, now seen corresponding path program 4 times [2018-01-30 04:13:34,513 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:34,513 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:34,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:34,514 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:34,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:34,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-01-30 04:13:34,826 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:34,826 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 04:13:34,845 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 04:13:34,859 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:34,861 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-30 04:13:34,927 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:34,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2018-01-30 04:13:34,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 04:13:34,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 04:13:34,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-01-30 04:13:34,928 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 16 states. [2018-01-30 04:13:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:35,242 INFO L93 Difference]: Finished difference Result 184 states and 209 transitions. [2018-01-30 04:13:35,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 04:13:35,253 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2018-01-30 04:13:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:35,254 INFO L225 Difference]: With dead ends: 184 [2018-01-30 04:13:35,254 INFO L226 Difference]: Without dead ends: 148 [2018-01-30 04:13:35,257 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2018-01-30 04:13:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-30 04:13:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 133. [2018-01-30 04:13:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-30 04:13:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2018-01-30 04:13:35,265 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 88 [2018-01-30 04:13:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:35,265 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2018-01-30 04:13:35,265 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 04:13:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2018-01-30 04:13:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-01-30 04:13:35,266 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:35,266 INFO L350 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:35,266 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:35,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2010423042, now seen corresponding path program 5 times [2018-01-30 04:13:35,266 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:35,267 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:35,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:35,267 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:35,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:35,284 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-01-30 04:13:35,387 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:35,387 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 04:13:35,391 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 04:13:35,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:35,400 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:35,402 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:35,416 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:35,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:35,436 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:35,448 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:35,450 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-01-30 04:13:35,541 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:35,541 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-30 04:13:35,541 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 04:13:35,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 04:13:35,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 04:13:35,542 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand 15 states. [2018-01-30 04:13:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:35,662 INFO L93 Difference]: Finished difference Result 154 states and 175 transitions. [2018-01-30 04:13:35,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 04:13:35,663 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 105 [2018-01-30 04:13:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:35,663 INFO L225 Difference]: With dead ends: 154 [2018-01-30 04:13:35,663 INFO L226 Difference]: Without dead ends: 141 [2018-01-30 04:13:35,664 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-30 04:13:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-01-30 04:13:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2018-01-30 04:13:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-30 04:13:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 157 transitions. [2018-01-30 04:13:35,668 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 157 transitions. Word has length 105 [2018-01-30 04:13:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:35,669 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 157 transitions. [2018-01-30 04:13:35,669 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 04:13:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 157 transitions. [2018-01-30 04:13:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-01-30 04:13:35,670 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:35,670 INFO L350 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:35,670 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:35,670 INFO L82 PathProgramCache]: Analyzing trace with hash -977029038, now seen corresponding path program 6 times [2018-01-30 04:13:35,670 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:35,670 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:35,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:35,671 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:35,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:35,681 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-01-30 04:13:35,776 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:35,776 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 04:13:35,785 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 04:13:35,791 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:35,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:35,794 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:35,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:35,798 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:35,802 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:35,809 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:35,810 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:35,813 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-01-30 04:13:35,970 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:35,970 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 21 [2018-01-30 04:13:35,973 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 04:13:35,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 04:13:35,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-01-30 04:13:35,973 INFO L87 Difference]: Start difference. First operand 139 states and 157 transitions. Second operand 21 states. [2018-01-30 04:13:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:36,317 INFO L93 Difference]: Finished difference Result 224 states and 252 transitions. [2018-01-30 04:13:36,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 04:13:36,317 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2018-01-30 04:13:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:36,318 INFO L225 Difference]: With dead ends: 224 [2018-01-30 04:13:36,318 INFO L226 Difference]: Without dead ends: 176 [2018-01-30 04:13:36,319 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=414, Invalid=1392, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 04:13:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-30 04:13:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 161. [2018-01-30 04:13:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-30 04:13:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2018-01-30 04:13:36,326 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 111 [2018-01-30 04:13:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:36,327 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2018-01-30 04:13:36,327 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 04:13:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2018-01-30 04:13:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-01-30 04:13:36,328 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:36,328 INFO L350 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:36,328 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2084476041, now seen corresponding path program 7 times [2018-01-30 04:13:36,328 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:36,328 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:36,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:36,329 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:36,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:36,337 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-01-30 04:13:36,727 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:36,727 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 04:13:36,732 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:36,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-01-30 04:13:36,845 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:36,845 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 24 [2018-01-30 04:13:36,845 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 04:13:36,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 04:13:36,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-01-30 04:13:36,846 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand 24 states. [2018-01-30 04:13:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:37,264 INFO L93 Difference]: Finished difference Result 252 states and 283 transitions. [2018-01-30 04:13:37,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 04:13:37,270 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 128 [2018-01-30 04:13:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:37,271 INFO L225 Difference]: With dead ends: 252 [2018-01-30 04:13:37,271 INFO L226 Difference]: Without dead ends: 198 [2018-01-30 04:13:37,272 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=549, Invalid=1901, Unknown=0, NotChecked=0, Total=2450 [2018-01-30 04:13:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-30 04:13:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 183. [2018-01-30 04:13:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-30 04:13:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 207 transitions. [2018-01-30 04:13:37,275 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 207 transitions. Word has length 128 [2018-01-30 04:13:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:37,276 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 207 transitions. [2018-01-30 04:13:37,276 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 04:13:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 207 transitions. [2018-01-30 04:13:37,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-01-30 04:13:37,277 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:37,277 INFO L350 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:37,277 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:37,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1045661650, now seen corresponding path program 8 times [2018-01-30 04:13:37,277 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:37,277 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:37,278 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:37,278 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:37,278 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:37,286 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-30 04:13:37,421 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:37,421 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 04:13:37,427 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 04:13:37,436 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:37,445 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:37,447 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:37,449 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-01-30 04:13:37,545 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:37,546 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 27 [2018-01-30 04:13:37,546 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 04:13:37,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 04:13:37,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2018-01-30 04:13:37,546 INFO L87 Difference]: Start difference. First operand 183 states and 207 transitions. Second operand 27 states. [2018-01-30 04:13:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:38,005 INFO L93 Difference]: Finished difference Result 280 states and 314 transitions. [2018-01-30 04:13:38,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 04:13:38,005 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 145 [2018-01-30 04:13:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:38,006 INFO L225 Difference]: With dead ends: 280 [2018-01-30 04:13:38,006 INFO L226 Difference]: Without dead ends: 220 [2018-01-30 04:13:38,006 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=2489, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 04:13:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-30 04:13:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 205. [2018-01-30 04:13:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-30 04:13:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 232 transitions. [2018-01-30 04:13:38,010 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 232 transitions. Word has length 145 [2018-01-30 04:13:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:38,010 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 232 transitions. [2018-01-30 04:13:38,010 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 04:13:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 232 transitions. [2018-01-30 04:13:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-01-30 04:13:38,011 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:38,011 INFO L350 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:38,011 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash 930735543, now seen corresponding path program 9 times [2018-01-30 04:13:38,012 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:38,012 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:38,012 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:38,012 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:38,012 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:38,020 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-01-30 04:13:38,193 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:38,193 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 04:13:38,198 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 04:13:38,203 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,211 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,213 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,215 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,217 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,219 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,221 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,224 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,228 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:38,241 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:38,243 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-01-30 04:13:38,361 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:38,361 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 30 [2018-01-30 04:13:38,361 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 04:13:38,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 04:13:38,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2018-01-30 04:13:38,362 INFO L87 Difference]: Start difference. First operand 205 states and 232 transitions. Second operand 30 states. [2018-01-30 04:13:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:38,894 INFO L93 Difference]: Finished difference Result 308 states and 345 transitions. [2018-01-30 04:13:38,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-30 04:13:38,895 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 162 [2018-01-30 04:13:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:38,896 INFO L225 Difference]: With dead ends: 308 [2018-01-30 04:13:38,896 INFO L226 Difference]: Without dead ends: 242 [2018-01-30 04:13:38,897 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=876, Invalid=3156, Unknown=0, NotChecked=0, Total=4032 [2018-01-30 04:13:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-30 04:13:38,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2018-01-30 04:13:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-30 04:13:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 257 transitions. [2018-01-30 04:13:38,909 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 257 transitions. Word has length 162 [2018-01-30 04:13:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:38,909 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 257 transitions. [2018-01-30 04:13:38,909 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 04:13:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 257 transitions. [2018-01-30 04:13:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-01-30 04:13:38,910 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:38,910 INFO L350 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:38,911 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:38,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2105270098, now seen corresponding path program 10 times [2018-01-30 04:13:38,911 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:38,911 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:38,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:38,916 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:38,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:38,925 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-01-30 04:13:39,393 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:39,393 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 04:13:39,397 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 04:13:39,416 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:39,418 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-01-30 04:13:39,731 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:39,731 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 33 [2018-01-30 04:13:39,731 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 04:13:39,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 04:13:39,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 04:13:39,732 INFO L87 Difference]: Start difference. First operand 227 states and 257 transitions. Second operand 33 states. [2018-01-30 04:13:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:40,469 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2018-01-30 04:13:40,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-30 04:13:40,471 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 179 [2018-01-30 04:13:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:40,472 INFO L225 Difference]: With dead ends: 336 [2018-01-30 04:13:40,472 INFO L226 Difference]: Without dead ends: 264 [2018-01-30 04:13:40,474 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1068, Invalid=3902, Unknown=0, NotChecked=0, Total=4970 [2018-01-30 04:13:40,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-30 04:13:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 249. [2018-01-30 04:13:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-01-30 04:13:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2018-01-30 04:13:40,483 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 179 [2018-01-30 04:13:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:40,484 INFO L432 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2018-01-30 04:13:40,484 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 04:13:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2018-01-30 04:13:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-01-30 04:13:40,485 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:40,485 INFO L350 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:40,485 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:40,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1597884425, now seen corresponding path program 11 times [2018-01-30 04:13:40,485 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:40,485 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:40,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:40,486 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:40,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:40,511 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2018-01-30 04:13:40,872 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:40,872 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 04:13:40,877 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 04:13:40,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,886 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,888 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,890 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,892 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,894 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,897 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,899 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,905 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:40,918 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:40,920 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 515 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-01-30 04:13:41,068 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:41,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 36 [2018-01-30 04:13:41,069 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 04:13:41,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 04:13:41,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 04:13:41,069 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand 36 states. [2018-01-30 04:13:41,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:41,944 INFO L93 Difference]: Finished difference Result 364 states and 407 transitions. [2018-01-30 04:13:41,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-01-30 04:13:41,944 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 196 [2018-01-30 04:13:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:41,945 INFO L225 Difference]: With dead ends: 364 [2018-01-30 04:13:41,945 INFO L226 Difference]: Without dead ends: 286 [2018-01-30 04:13:41,946 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1279, Invalid=4727, Unknown=0, NotChecked=0, Total=6006 [2018-01-30 04:13:41,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-30 04:13:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 271. [2018-01-30 04:13:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-01-30 04:13:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 307 transitions. [2018-01-30 04:13:41,950 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 307 transitions. Word has length 196 [2018-01-30 04:13:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:41,950 INFO L432 AbstractCegarLoop]: Abstraction has 271 states and 307 transitions. [2018-01-30 04:13:41,950 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 04:13:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 307 transitions. [2018-01-30 04:13:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-30 04:13:41,950 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:41,951 INFO L350 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:41,951 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:41,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1002356434, now seen corresponding path program 12 times [2018-01-30 04:13:41,951 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:41,951 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:41,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:41,951 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:41,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:41,959 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2018-01-30 04:13:42,465 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:42,465 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 04:13:42,470 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 04:13:42,476 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,477 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,478 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,480 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,482 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,495 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,507 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,510 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,512 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,514 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,517 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,520 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,529 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:42,530 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:42,532 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2018-01-30 04:13:42,716 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:42,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 39 [2018-01-30 04:13:42,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 04:13:42,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 04:13:42,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 04:13:42,717 INFO L87 Difference]: Start difference. First operand 271 states and 307 transitions. Second operand 39 states. [2018-01-30 04:13:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:43,399 INFO L93 Difference]: Finished difference Result 392 states and 438 transitions. [2018-01-30 04:13:43,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-30 04:13:43,400 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 213 [2018-01-30 04:13:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:43,400 INFO L225 Difference]: With dead ends: 392 [2018-01-30 04:13:43,400 INFO L226 Difference]: Without dead ends: 308 [2018-01-30 04:13:43,402 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1509, Invalid=5631, Unknown=0, NotChecked=0, Total=7140 [2018-01-30 04:13:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-01-30 04:13:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 293. [2018-01-30 04:13:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-01-30 04:13:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 332 transitions. [2018-01-30 04:13:43,406 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 332 transitions. Word has length 213 [2018-01-30 04:13:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:43,406 INFO L432 AbstractCegarLoop]: Abstraction has 293 states and 332 transitions. [2018-01-30 04:13:43,406 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 04:13:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 332 transitions. [2018-01-30 04:13:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-01-30 04:13:43,407 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:43,407 INFO L350 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:43,407 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:43,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1421319625, now seen corresponding path program 13 times [2018-01-30 04:13:43,407 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:43,407 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:43,408 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:43,408 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:43,408 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:43,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2018-01-30 04:13:43,894 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:43,894 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:13:43,899 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:43,921 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2018-01-30 04:13:44,107 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:44,107 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 42 [2018-01-30 04:13:44,108 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 04:13:44,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 04:13:44,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1392, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 04:13:44,108 INFO L87 Difference]: Start difference. First operand 293 states and 332 transitions. Second operand 42 states. [2018-01-30 04:13:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:45,461 INFO L93 Difference]: Finished difference Result 420 states and 469 transitions. [2018-01-30 04:13:45,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-30 04:13:45,462 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 230 [2018-01-30 04:13:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:45,463 INFO L225 Difference]: With dead ends: 420 [2018-01-30 04:13:45,463 INFO L226 Difference]: Without dead ends: 330 [2018-01-30 04:13:45,464 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1758, Invalid=6614, Unknown=0, NotChecked=0, Total=8372 [2018-01-30 04:13:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-01-30 04:13:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 315. [2018-01-30 04:13:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-01-30 04:13:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 357 transitions. [2018-01-30 04:13:45,468 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 357 transitions. Word has length 230 [2018-01-30 04:13:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:45,468 INFO L432 AbstractCegarLoop]: Abstraction has 315 states and 357 transitions. [2018-01-30 04:13:45,468 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 04:13:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 357 transitions. [2018-01-30 04:13:45,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-01-30 04:13:45,469 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:45,469 INFO L350 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:45,469 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:45,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1155652014, now seen corresponding path program 14 times [2018-01-30 04:13:45,469 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:45,469 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:45,470 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:45,470 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:45,470 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:45,479 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2018-01-30 04:13:45,869 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:45,869 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 04:13:45,874 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 04:13:45,881 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:45,895 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:45,898 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:45,900 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2018-01-30 04:13:46,106 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:46,106 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 45 [2018-01-30 04:13:46,106 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-30 04:13:46,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-30 04:13:46,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=1604, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 04:13:46,107 INFO L87 Difference]: Start difference. First operand 315 states and 357 transitions. Second operand 45 states. [2018-01-30 04:13:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:46,929 INFO L93 Difference]: Finished difference Result 448 states and 500 transitions. [2018-01-30 04:13:46,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-01-30 04:13:46,929 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 247 [2018-01-30 04:13:46,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:46,930 INFO L225 Difference]: With dead ends: 448 [2018-01-30 04:13:46,930 INFO L226 Difference]: Without dead ends: 352 [2018-01-30 04:13:46,932 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2026, Invalid=7676, Unknown=0, NotChecked=0, Total=9702 [2018-01-30 04:13:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-01-30 04:13:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 337. [2018-01-30 04:13:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-30 04:13:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 382 transitions. [2018-01-30 04:13:46,937 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 382 transitions. Word has length 247 [2018-01-30 04:13:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:46,937 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 382 transitions. [2018-01-30 04:13:46,937 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-30 04:13:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 382 transitions. [2018-01-30 04:13:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-01-30 04:13:46,938 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:46,938 INFO L350 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:46,938 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:46,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2126879625, now seen corresponding path program 15 times [2018-01-30 04:13:46,938 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:46,938 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:46,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:46,939 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:46,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:46,950 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2018-01-30 04:13:47,429 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:47,429 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:13:47,434 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 04:13:47,440 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,442 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,444 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,446 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,448 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,450 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,453 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,456 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,460 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,468 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,471 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,475 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,479 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,484 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,488 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:13:47,489 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:47,492 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 0 proven. 1029 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-01-30 04:13:47,871 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:47,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31] total 48 [2018-01-30 04:13:47,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-30 04:13:47,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-30 04:13:47,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2018-01-30 04:13:47,872 INFO L87 Difference]: Start difference. First operand 337 states and 382 transitions. Second operand 48 states. [2018-01-30 04:13:49,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:49,397 INFO L93 Difference]: Finished difference Result 476 states and 531 transitions. [2018-01-30 04:13:49,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-30 04:13:49,397 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 264 [2018-01-30 04:13:49,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:49,398 INFO L225 Difference]: With dead ends: 476 [2018-01-30 04:13:49,398 INFO L226 Difference]: Without dead ends: 374 [2018-01-30 04:13:49,399 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2313, Invalid=8817, Unknown=0, NotChecked=0, Total=11130 [2018-01-30 04:13:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-01-30 04:13:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 359. [2018-01-30 04:13:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-01-30 04:13:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 407 transitions. [2018-01-30 04:13:49,402 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 407 transitions. Word has length 264 [2018-01-30 04:13:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:49,402 INFO L432 AbstractCegarLoop]: Abstraction has 359 states and 407 transitions. [2018-01-30 04:13:49,402 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-30 04:13:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 407 transitions. [2018-01-30 04:13:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-01-30 04:13:49,403 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:49,403 INFO L350 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:49,403 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:49,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1729893842, now seen corresponding path program 16 times [2018-01-30 04:13:49,404 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:49,404 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:49,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:49,404 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:49,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:49,413 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2018-01-30 04:13:49,931 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:49,931 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 04:13:49,940 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 04:13:49,970 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:49,972 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-01-30 04:13:50,204 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:50,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33] total 51 [2018-01-30 04:13:50,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-30 04:13:50,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-30 04:13:50,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=2073, Unknown=0, NotChecked=0, Total=2550 [2018-01-30 04:13:50,205 INFO L87 Difference]: Start difference. First operand 359 states and 407 transitions. Second operand 51 states. [2018-01-30 04:13:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:51,242 INFO L93 Difference]: Finished difference Result 504 states and 562 transitions. [2018-01-30 04:13:51,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-30 04:13:51,242 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 281 [2018-01-30 04:13:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:51,243 INFO L225 Difference]: With dead ends: 504 [2018-01-30 04:13:51,243 INFO L226 Difference]: Without dead ends: 396 [2018-01-30 04:13:51,244 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2619, Invalid=10037, Unknown=0, NotChecked=0, Total=12656 [2018-01-30 04:13:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-01-30 04:13:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2018-01-30 04:13:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-01-30 04:13:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 432 transitions. [2018-01-30 04:13:51,248 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 432 transitions. Word has length 281 [2018-01-30 04:13:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:51,248 INFO L432 AbstractCegarLoop]: Abstraction has 381 states and 432 transitions. [2018-01-30 04:13:51,248 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-30 04:13:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 432 transitions. [2018-01-30 04:13:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-01-30 04:13:51,249 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:51,249 INFO L350 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:51,249 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash -347717961, now seen corresponding path program 17 times [2018-01-30 04:13:51,249 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:51,249 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:51,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:51,250 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:51,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:51,259 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-30 04:13:52,059 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:52,059 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 04:13:52,063 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 04:13:52,079 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,092 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,105 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,119 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,132 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,145 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,159 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,185 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,212 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,232 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,240 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,244 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,252 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,261 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,268 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:52,268 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:52,271 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-30 04:13:52,351 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:52,351 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-30 04:13:52,352 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 04:13:52,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 04:13:52,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 04:13:52,352 INFO L87 Difference]: Start difference. First operand 381 states and 432 transitions. Second operand 39 states. [2018-01-30 04:13:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:52,838 INFO L93 Difference]: Finished difference Result 402 states and 456 transitions. [2018-01-30 04:13:52,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-30 04:13:52,839 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 298 [2018-01-30 04:13:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:52,840 INFO L225 Difference]: With dead ends: 402 [2018-01-30 04:13:52,840 INFO L226 Difference]: Without dead ends: 389 [2018-01-30 04:13:52,840 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-30 04:13:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-01-30 04:13:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2018-01-30 04:13:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-01-30 04:13:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 438 transitions. [2018-01-30 04:13:52,843 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 438 transitions. Word has length 298 [2018-01-30 04:13:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:52,844 INFO L432 AbstractCegarLoop]: Abstraction has 387 states and 438 transitions. [2018-01-30 04:13:52,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 04:13:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 438 transitions. [2018-01-30 04:13:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-30 04:13:52,845 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:52,845 INFO L350 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:52,845 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:52,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2046165945, now seen corresponding path program 18 times [2018-01-30 04:13:52,845 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:52,845 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:52,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:52,846 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:52,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:52,855 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-30 04:13:53,676 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:53,677 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 04:13:53,681 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 04:13:53,696 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,697 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,700 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,701 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,703 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,705 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,712 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,714 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,716 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,719 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,722 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,726 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,731 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,734 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,737 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,741 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:13:53,742 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:53,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-30 04:13:53,831 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:53,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2018-01-30 04:13:53,831 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-30 04:13:53,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-30 04:13:53,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 04:13:53,832 INFO L87 Difference]: Start difference. First operand 387 states and 438 transitions. Second operand 41 states. [2018-01-30 04:13:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:54,412 INFO L93 Difference]: Finished difference Result 408 states and 462 transitions. [2018-01-30 04:13:54,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-30 04:13:54,412 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 304 [2018-01-30 04:13:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:54,413 INFO L225 Difference]: With dead ends: 408 [2018-01-30 04:13:54,413 INFO L226 Difference]: Without dead ends: 395 [2018-01-30 04:13:54,414 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2018-01-30 04:13:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-01-30 04:13:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2018-01-30 04:13:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-01-30 04:13:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 444 transitions. [2018-01-30 04:13:54,417 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 444 transitions. Word has length 304 [2018-01-30 04:13:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:54,417 INFO L432 AbstractCegarLoop]: Abstraction has 393 states and 444 transitions. [2018-01-30 04:13:54,417 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-30 04:13:54,417 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 444 transitions. [2018-01-30 04:13:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-30 04:13:54,418 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:54,418 INFO L350 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:54,419 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:54,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2110606807, now seen corresponding path program 19 times [2018-01-30 04:13:54,419 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:54,419 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:54,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:54,419 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:13:54,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:54,433 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2435 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-30 04:13:54,998 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:54,998 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 04:13:55,003 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:55,035 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2435 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2018-01-30 04:13:55,357 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:55,357 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 35] total 58 [2018-01-30 04:13:55,358 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-30 04:13:55,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-30 04:13:55,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=2692, Unknown=0, NotChecked=0, Total=3306 [2018-01-30 04:13:55,358 INFO L87 Difference]: Start difference. First operand 393 states and 444 transitions. Second operand 58 states. [2018-01-30 04:13:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:13:56,600 INFO L93 Difference]: Finished difference Result 556 states and 617 transitions. [2018-01-30 04:13:56,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-01-30 04:13:56,614 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 310 [2018-01-30 04:13:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:13:56,616 INFO L225 Difference]: With dead ends: 556 [2018-01-30 04:13:56,616 INFO L226 Difference]: Without dead ends: 430 [2018-01-30 04:13:56,617 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3499 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3390, Invalid=12866, Unknown=0, NotChecked=0, Total=16256 [2018-01-30 04:13:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-01-30 04:13:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 415. [2018-01-30 04:13:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-01-30 04:13:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 469 transitions. [2018-01-30 04:13:56,620 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 469 transitions. Word has length 310 [2018-01-30 04:13:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:13:56,620 INFO L432 AbstractCegarLoop]: Abstraction has 415 states and 469 transitions. [2018-01-30 04:13:56,620 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-30 04:13:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 469 transitions. [2018-01-30 04:13:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-01-30 04:13:56,621 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:13:56,622 INFO L350 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:13:56,622 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:13:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash -829322254, now seen corresponding path program 20 times [2018-01-30 04:13:56,622 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:13:56,622 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:13:56,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:56,622 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:13:56,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:13:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:13:56,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:13:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2018-01-30 04:13:57,424 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:13:57,424 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 04:13:57,428 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 04:13:57,443 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:57,473 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:13:57,476 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:13:57,478 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:13:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 1530 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2018-01-30 04:13:59,106 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:13:59,106 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 37] total 61 [2018-01-30 04:13:59,107 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-30 04:13:59,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-30 04:13:59,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=2984, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 04:13:59,107 INFO L87 Difference]: Start difference. First operand 415 states and 469 transitions. Second operand 61 states. [2018-01-30 04:14:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:00,463 INFO L93 Difference]: Finished difference Result 584 states and 648 transitions. [2018-01-30 04:14:00,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-30 04:14:00,464 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 327 [2018-01-30 04:14:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:00,465 INFO L225 Difference]: With dead ends: 584 [2018-01-30 04:14:00,465 INFO L226 Difference]: Without dead ends: 452 [2018-01-30 04:14:00,466 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3758, Invalid=14332, Unknown=0, NotChecked=0, Total=18090 [2018-01-30 04:14:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2018-01-30 04:14:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 437. [2018-01-30 04:14:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-01-30 04:14:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 494 transitions. [2018-01-30 04:14:00,469 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 494 transitions. Word has length 327 [2018-01-30 04:14:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:00,470 INFO L432 AbstractCegarLoop]: Abstraction has 437 states and 494 transitions. [2018-01-30 04:14:00,470 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-30 04:14:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 494 transitions. [2018-01-30 04:14:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-30 04:14:00,471 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:00,471 INFO L350 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:00,471 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:00,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1712873449, now seen corresponding path program 21 times [2018-01-30 04:14:00,471 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:00,471 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:00,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:00,472 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:00,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:00,480 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2018-01-30 04:14:01,163 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:01,163 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 04:14:01,167 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 04:14:01,176 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,177 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,180 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,188 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,193 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,195 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,197 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,200 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,203 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,206 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,208 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,213 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,226 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,235 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,243 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,250 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,255 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,264 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:01,265 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:01,267 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 0 proven. 1719 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2018-01-30 04:14:01,617 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:01,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 39] total 64 [2018-01-30 04:14:01,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-01-30 04:14:01,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-01-30 04:14:01,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=3291, Unknown=0, NotChecked=0, Total=4032 [2018-01-30 04:14:01,618 INFO L87 Difference]: Start difference. First operand 437 states and 494 transitions. Second operand 64 states. [2018-01-30 04:14:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:03,099 INFO L93 Difference]: Finished difference Result 612 states and 679 transitions. [2018-01-30 04:14:03,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-01-30 04:14:03,100 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 344 [2018-01-30 04:14:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:03,101 INFO L225 Difference]: With dead ends: 612 [2018-01-30 04:14:03,101 INFO L226 Difference]: Without dead ends: 474 [2018-01-30 04:14:03,102 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4329 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4145, Invalid=15877, Unknown=0, NotChecked=0, Total=20022 [2018-01-30 04:14:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-30 04:14:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 459. [2018-01-30 04:14:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-01-30 04:14:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2018-01-30 04:14:03,105 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 344 [2018-01-30 04:14:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:03,105 INFO L432 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2018-01-30 04:14:03,105 INFO L433 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-01-30 04:14:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2018-01-30 04:14:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-01-30 04:14:03,107 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:03,107 INFO L350 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:03,107 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash 21973874, now seen corresponding path program 22 times [2018-01-30 04:14:03,107 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:03,107 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:03,107 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:03,107 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:03,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:03,116 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2018-01-30 04:14:04,203 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:04,203 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:14:04,207 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 04:14:04,246 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:04,249 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 1919 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 04:14:04,805 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:04,805 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 41] total 67 [2018-01-30 04:14:04,805 INFO L409 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-01-30 04:14:04,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-01-30 04:14:04,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=3613, Unknown=0, NotChecked=0, Total=4422 [2018-01-30 04:14:04,806 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 67 states. [2018-01-30 04:14:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:06,460 INFO L93 Difference]: Finished difference Result 640 states and 710 transitions. [2018-01-30 04:14:06,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-01-30 04:14:06,461 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 361 [2018-01-30 04:14:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:06,462 INFO L225 Difference]: With dead ends: 640 [2018-01-30 04:14:06,462 INFO L226 Difference]: Without dead ends: 496 [2018-01-30 04:14:06,462 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4777 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4551, Invalid=17501, Unknown=0, NotChecked=0, Total=22052 [2018-01-30 04:14:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2018-01-30 04:14:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 481. [2018-01-30 04:14:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-01-30 04:14:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 544 transitions. [2018-01-30 04:14:06,467 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 544 transitions. Word has length 361 [2018-01-30 04:14:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:06,467 INFO L432 AbstractCegarLoop]: Abstraction has 481 states and 544 transitions. [2018-01-30 04:14:06,467 INFO L433 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-01-30 04:14:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 544 transitions. [2018-01-30 04:14:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-01-30 04:14:06,469 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:06,469 INFO L350 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:06,469 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:06,469 INFO L82 PathProgramCache]: Analyzing trace with hash -51131817, now seen corresponding path program 23 times [2018-01-30 04:14:06,469 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:06,469 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:06,469 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:06,470 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:06,470 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:06,479 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3717 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 2130 trivial. 0 not checked. [2018-01-30 04:14:07,375 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:07,375 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 04:14:07,381 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 04:14:07,387 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,388 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,389 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,391 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,392 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,394 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,396 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,426 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,432 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,435 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,437 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,440 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,444 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,447 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,456 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,461 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,472 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,478 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,485 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,493 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,503 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:07,503 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:07,506 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3717 backedges. 0 proven. 2130 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-01-30 04:14:07,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:07,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 43] total 70 [2018-01-30 04:14:07,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-01-30 04:14:07,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-01-30 04:14:07,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=3950, Unknown=0, NotChecked=0, Total=4830 [2018-01-30 04:14:07,936 INFO L87 Difference]: Start difference. First operand 481 states and 544 transitions. Second operand 70 states. [2018-01-30 04:14:09,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:09,791 INFO L93 Difference]: Finished difference Result 668 states and 741 transitions. [2018-01-30 04:14:09,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-01-30 04:14:09,791 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 378 [2018-01-30 04:14:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:09,793 INFO L225 Difference]: With dead ends: 668 [2018-01-30 04:14:09,793 INFO L226 Difference]: Without dead ends: 518 [2018-01-30 04:14:09,794 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5247 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4976, Invalid=19204, Unknown=0, NotChecked=0, Total=24180 [2018-01-30 04:14:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2018-01-30 04:14:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 503. [2018-01-30 04:14:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2018-01-30 04:14:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 569 transitions. [2018-01-30 04:14:09,798 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 569 transitions. Word has length 378 [2018-01-30 04:14:09,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:09,798 INFO L432 AbstractCegarLoop]: Abstraction has 503 states and 569 transitions. [2018-01-30 04:14:09,798 INFO L433 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-01-30 04:14:09,799 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 569 transitions. [2018-01-30 04:14:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-01-30 04:14:09,800 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:09,800 INFO L350 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:09,800 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:09,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1638241010, now seen corresponding path program 24 times [2018-01-30 04:14:09,800 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:09,800 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:09,801 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:09,801 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:09,801 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:09,810 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4080 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-01-30 04:14:10,721 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:10,721 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 04:14:10,726 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 04:14:10,734 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,735 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,736 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,737 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,740 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,742 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,744 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,746 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,748 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,750 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,753 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,758 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,761 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,764 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,767 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,772 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,780 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,787 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,791 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,797 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,805 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,817 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:10,818 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:10,821 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4080 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-01-30 04:14:10,908 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:10,908 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2018-01-30 04:14:10,908 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-30 04:14:10,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-30 04:14:10,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 04:14:10,909 INFO L87 Difference]: Start difference. First operand 503 states and 569 transitions. Second operand 53 states. [2018-01-30 04:14:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:11,743 INFO L93 Difference]: Finished difference Result 524 states and 593 transitions. [2018-01-30 04:14:11,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-30 04:14:11,743 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 395 [2018-01-30 04:14:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:11,744 INFO L225 Difference]: With dead ends: 524 [2018-01-30 04:14:11,744 INFO L226 Difference]: Without dead ends: 511 [2018-01-30 04:14:11,745 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2018-01-30 04:14:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-01-30 04:14:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2018-01-30 04:14:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-01-30 04:14:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 575 transitions. [2018-01-30 04:14:11,748 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 575 transitions. Word has length 395 [2018-01-30 04:14:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:11,749 INFO L432 AbstractCegarLoop]: Abstraction has 509 states and 575 transitions. [2018-01-30 04:14:11,749 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-30 04:14:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 575 transitions. [2018-01-30 04:14:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-01-30 04:14:11,750 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:11,750 INFO L350 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:11,750 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash 900331586, now seen corresponding path program 25 times [2018-01-30 04:14:11,750 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:11,750 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:11,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:11,751 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:11,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:11,760 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4227 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-01-30 04:14:12,702 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:12,702 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 04:14:12,706 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:14:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:12,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4227 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 1875 trivial. 0 not checked. [2018-01-30 04:14:13,372 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:13,372 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 45] total 75 [2018-01-30 04:14:13,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-01-30 04:14:13,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-01-30 04:14:13,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1008, Invalid=4542, Unknown=0, NotChecked=0, Total=5550 [2018-01-30 04:14:13,373 INFO L87 Difference]: Start difference. First operand 509 states and 575 transitions. Second operand 75 states. [2018-01-30 04:14:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:15,563 INFO L93 Difference]: Finished difference Result 708 states and 784 transitions. [2018-01-30 04:14:15,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-01-30 04:14:15,564 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 401 [2018-01-30 04:14:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:15,565 INFO L225 Difference]: With dead ends: 708 [2018-01-30 04:14:15,565 INFO L226 Difference]: Without dead ends: 546 [2018-01-30 04:14:15,566 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6015 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5718, Invalid=22004, Unknown=0, NotChecked=0, Total=27722 [2018-01-30 04:14:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2018-01-30 04:14:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 531. [2018-01-30 04:14:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2018-01-30 04:14:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 600 transitions. [2018-01-30 04:14:15,571 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 600 transitions. Word has length 401 [2018-01-30 04:14:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:15,571 INFO L432 AbstractCegarLoop]: Abstraction has 531 states and 600 transitions. [2018-01-30 04:14:15,571 INFO L433 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-01-30 04:14:15,571 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 600 transitions. [2018-01-30 04:14:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-01-30 04:14:15,573 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:15,573 INFO L350 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:15,573 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:15,573 INFO L82 PathProgramCache]: Analyzing trace with hash 574202407, now seen corresponding path program 26 times [2018-01-30 04:14:15,573 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:15,573 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:15,574 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:15,574 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:14:15,574 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:15,583 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4613 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2018-01-30 04:14:16,821 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:16,821 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:14:16,826 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 04:14:16,833 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:16,853 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:16,858 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:16,861 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4613 backedges. 0 proven. 2585 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-01-30 04:14:17,461 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:17,461 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 47] total 78 [2018-01-30 04:14:17,462 INFO L409 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-01-30 04:14:17,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-01-30 04:14:17,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1087, Invalid=4919, Unknown=0, NotChecked=0, Total=6006 [2018-01-30 04:14:17,462 INFO L87 Difference]: Start difference. First operand 531 states and 600 transitions. Second operand 78 states. [2018-01-30 04:14:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:19,831 INFO L93 Difference]: Finished difference Result 736 states and 815 transitions. [2018-01-30 04:14:19,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-01-30 04:14:19,831 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 418 [2018-01-30 04:14:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:19,833 INFO L225 Difference]: With dead ends: 736 [2018-01-30 04:14:19,833 INFO L226 Difference]: Without dead ends: 568 [2018-01-30 04:14:19,834 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6541 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6193, Invalid=23909, Unknown=0, NotChecked=0, Total=30102 [2018-01-30 04:14:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-01-30 04:14:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 553. [2018-01-30 04:14:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2018-01-30 04:14:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 625 transitions. [2018-01-30 04:14:19,839 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 625 transitions. Word has length 418 [2018-01-30 04:14:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:19,839 INFO L432 AbstractCegarLoop]: Abstraction has 553 states and 625 transitions. [2018-01-30 04:14:19,839 INFO L433 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-01-30 04:14:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 625 transitions. [2018-01-30 04:14:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-01-30 04:14:19,841 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:19,841 INFO L350 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:19,842 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1797334978, now seen corresponding path program 27 times [2018-01-30 04:14:19,842 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:19,842 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:19,842 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:19,842 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:19,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:19,852 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2018-01-30 04:14:20,891 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:20,892 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:14:20,897 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 04:14:20,906 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,910 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,912 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,914 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,916 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,919 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,921 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,923 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,926 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,929 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,932 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,936 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,940 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,945 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,951 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,956 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,964 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,972 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,981 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:20,991 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:21,001 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:21,017 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:21,030 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:21,043 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 04:14:21,044 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:21,047 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 0 proven. 2829 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-01-30 04:14:21,611 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:21,611 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 49] total 81 [2018-01-30 04:14:21,612 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-01-30 04:14:21,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-01-30 04:14:21,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1169, Invalid=5311, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 04:14:21,612 INFO L87 Difference]: Start difference. First operand 553 states and 625 transitions. Second operand 81 states. [2018-01-30 04:14:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:24,018 INFO L93 Difference]: Finished difference Result 764 states and 846 transitions. [2018-01-30 04:14:24,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-01-30 04:14:24,018 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 435 [2018-01-30 04:14:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:24,019 INFO L225 Difference]: With dead ends: 764 [2018-01-30 04:14:24,019 INFO L226 Difference]: Without dead ends: 590 [2018-01-30 04:14:24,020 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7089 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6687, Invalid=25893, Unknown=0, NotChecked=0, Total=32580 [2018-01-30 04:14:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2018-01-30 04:14:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 575. [2018-01-30 04:14:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2018-01-30 04:14:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 650 transitions. [2018-01-30 04:14:24,025 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 650 transitions. Word has length 435 [2018-01-30 04:14:24,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:24,025 INFO L432 AbstractCegarLoop]: Abstraction has 575 states and 650 transitions. [2018-01-30 04:14:24,026 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-01-30 04:14:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 650 transitions. [2018-01-30 04:14:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-01-30 04:14:24,027 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:24,027 INFO L350 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:24,027 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:24,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2005480345, now seen corresponding path program 28 times [2018-01-30 04:14:24,027 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:24,027 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:24,029 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:24,029 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:24,029 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:24,038 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5436 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2018-01-30 04:14:25,281 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:25,281 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 04:14:25,287 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 04:14:25,340 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:25,343 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5436 backedges. 0 proven. 3084 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-01-30 04:14:26,388 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:26,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 51] total 84 [2018-01-30 04:14:26,389 INFO L409 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-01-30 04:14:26,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-01-30 04:14:26,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1254, Invalid=5718, Unknown=0, NotChecked=0, Total=6972 [2018-01-30 04:14:26,390 INFO L87 Difference]: Start difference. First operand 575 states and 650 transitions. Second operand 84 states. [2018-01-30 04:14:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:29,007 INFO L93 Difference]: Finished difference Result 792 states and 877 transitions. [2018-01-30 04:14:29,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-01-30 04:14:29,007 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 452 [2018-01-30 04:14:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:29,009 INFO L225 Difference]: With dead ends: 792 [2018-01-30 04:14:29,009 INFO L226 Difference]: Without dead ends: 612 [2018-01-30 04:14:29,011 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7659 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7200, Invalid=27956, Unknown=0, NotChecked=0, Total=35156 [2018-01-30 04:14:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2018-01-30 04:14:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 597. [2018-01-30 04:14:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2018-01-30 04:14:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 675 transitions. [2018-01-30 04:14:29,015 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 675 transitions. Word has length 452 [2018-01-30 04:14:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:29,016 INFO L432 AbstractCegarLoop]: Abstraction has 597 states and 675 transitions. [2018-01-30 04:14:29,016 INFO L433 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-01-30 04:14:29,016 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 675 transitions. [2018-01-30 04:14:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-01-30 04:14:29,018 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:29,018 INFO L350 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:29,018 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:29,018 INFO L82 PathProgramCache]: Analyzing trace with hash -550576318, now seen corresponding path program 29 times [2018-01-30 04:14:29,018 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:29,018 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:29,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:29,019 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:29,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:29,030 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5873 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-30 04:14:30,266 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:30,266 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 04:14:30,271 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 04:14:30,279 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,280 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,281 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,282 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,283 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,285 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,287 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,289 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,290 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,292 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,295 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,297 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,300 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,303 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,306 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,310 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,313 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,318 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,323 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,334 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,341 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,349 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,358 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,366 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,375 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,386 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,397 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,409 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 04:14:30,425 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:30,428 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5873 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-30 04:14:30,555 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:30,556 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2018-01-30 04:14:30,556 INFO L409 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-01-30 04:14:30,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-01-30 04:14:30,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2018-01-30 04:14:30,556 INFO L87 Difference]: Start difference. First operand 597 states and 675 transitions. Second operand 63 states. [2018-01-30 04:14:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:31,826 INFO L93 Difference]: Finished difference Result 618 states and 699 transitions. [2018-01-30 04:14:31,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-01-30 04:14:31,826 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 469 [2018-01-30 04:14:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:31,828 INFO L225 Difference]: With dead ends: 618 [2018-01-30 04:14:31,828 INFO L226 Difference]: Without dead ends: 605 [2018-01-30 04:14:31,829 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2018-01-30 04:14:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2018-01-30 04:14:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2018-01-30 04:14:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2018-01-30 04:14:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 681 transitions. [2018-01-30 04:14:31,833 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 681 transitions. Word has length 469 [2018-01-30 04:14:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:31,833 INFO L432 AbstractCegarLoop]: Abstraction has 603 states and 681 transitions. [2018-01-30 04:14:31,833 INFO L433 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-01-30 04:14:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 681 transitions. [2018-01-30 04:14:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-01-30 04:14:31,835 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:31,835 INFO L350 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:31,835 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:31,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1979922286, now seen corresponding path program 30 times [2018-01-30 04:14:31,835 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:31,835 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:31,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:31,836 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:31,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:31,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-30 04:14:33,183 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:33,183 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 04:14:33,188 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 04:14:33,197 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,204 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,206 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,207 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,209 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,210 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,212 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,213 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,215 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,217 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,218 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,221 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,223 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,226 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,228 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,231 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,234 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,236 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,240 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,243 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,248 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,252 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,256 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,263 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,274 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,290 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,296 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,305 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 04:14:33,312 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 04:14:33,315 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-30 04:14:33,433 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:33,433 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2018-01-30 04:14:33,433 INFO L409 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-01-30 04:14:33,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-01-30 04:14:33,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-01-30 04:14:33,434 INFO L87 Difference]: Start difference. First operand 603 states and 681 transitions. Second operand 65 states. [2018-01-30 04:14:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:34,635 INFO L93 Difference]: Finished difference Result 624 states and 705 transitions. [2018-01-30 04:14:34,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-01-30 04:14:34,635 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 475 [2018-01-30 04:14:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:34,636 INFO L225 Difference]: With dead ends: 624 [2018-01-30 04:14:34,636 INFO L226 Difference]: Without dead ends: 611 [2018-01-30 04:14:34,637 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4871, Invalid=10629, Unknown=0, NotChecked=0, Total=15500 [2018-01-30 04:14:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2018-01-30 04:14:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 609. [2018-01-30 04:14:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2018-01-30 04:14:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 687 transitions. [2018-01-30 04:14:34,641 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 687 transitions. Word has length 475 [2018-01-30 04:14:34,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:34,641 INFO L432 AbstractCegarLoop]: Abstraction has 609 states and 687 transitions. [2018-01-30 04:14:34,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-01-30 04:14:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 687 transitions. [2018-01-30 04:14:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-01-30 04:14:34,643 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:34,643 INFO L350 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:34,643 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:34,643 INFO L82 PathProgramCache]: Analyzing trace with hash 988444130, now seen corresponding path program 31 times [2018-01-30 04:14:34,643 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:34,643 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:34,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:34,644 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 04:14:34,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:34,654 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 04:14:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6233 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-30 04:14:36,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 04:14:36,569 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 04:14:36,574 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:14:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:36,615 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 04:14:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6233 backedges. 0 proven. 3350 refuted. 0 times theorem prover too weak. 2883 trivial. 0 not checked. [2018-01-30 04:14:37,255 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 04:14:37,255 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 53] total 91 [2018-01-30 04:14:37,255 INFO L409 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-01-30 04:14:37,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-01-30 04:14:37,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1472, Invalid=6718, Unknown=0, NotChecked=0, Total=8190 [2018-01-30 04:14:37,256 INFO L87 Difference]: Start difference. First operand 609 states and 687 transitions. Second operand 91 states. [2018-01-30 04:14:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 04:14:40,164 INFO L93 Difference]: Finished difference Result 844 states and 932 transitions. [2018-01-30 04:14:40,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-01-30 04:14:40,164 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 481 [2018-01-30 04:14:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 04:14:40,166 INFO L225 Difference]: With dead ends: 844 [2018-01-30 04:14:40,166 INFO L226 Difference]: Without dead ends: 646 [2018-01-30 04:14:40,167 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8917 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8454, Invalid=32552, Unknown=0, NotChecked=0, Total=41006 [2018-01-30 04:14:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2018-01-30 04:14:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 631. [2018-01-30 04:14:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2018-01-30 04:14:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 712 transitions. [2018-01-30 04:14:40,181 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 712 transitions. Word has length 481 [2018-01-30 04:14:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 04:14:40,181 INFO L432 AbstractCegarLoop]: Abstraction has 631 states and 712 transitions. [2018-01-30 04:14:40,181 INFO L433 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-01-30 04:14:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 712 transitions. [2018-01-30 04:14:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-01-30 04:14:40,183 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 04:14:40,183 INFO L350 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 04:14:40,183 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 04:14:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash -739478073, now seen corresponding path program 32 times [2018-01-30 04:14:40,183 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 04:14:40,183 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 04:14:40,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:40,184 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 04:14:40,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 04:14:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 04:14:40,201 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-30 04:14:41,078 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 04:14:41,081 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 04:14:41,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 04:14:41 BasicIcfg [2018-01-30 04:14:41,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 04:14:41,082 INFO L168 Benchmark]: Toolchain (without parser) took 69330.79 ms. Allocated memory was 151.5 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 116.8 MB in the beginning and 992.0 MB in the end (delta: -875.2 MB). Peak memory consumption was 326.5 MB. Max. memory is 5.3 GB. [2018-01-30 04:14:41,083 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 151.5 MB. Free memory is still 121.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 04:14:41,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 109.23 ms. Allocated memory is still 151.5 MB. Free memory was 116.6 MB in the beginning and 108.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. [2018-01-30 04:14:41,083 INFO L168 Benchmark]: Boogie Preprocessor took 16.87 ms. Allocated memory is still 151.5 MB. Free memory was 108.2 MB in the beginning and 106.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. [2018-01-30 04:14:41,083 INFO L168 Benchmark]: RCFGBuilder took 296.17 ms. Allocated memory is still 151.5 MB. Free memory was 106.6 MB in the beginning and 93.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-01-30 04:14:41,083 INFO L168 Benchmark]: IcfgTransformer took 11.52 ms. Allocated memory is still 151.5 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-01-30 04:14:41,083 INFO L168 Benchmark]: TraceAbstraction took 68894.01 ms. Allocated memory was 151.5 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 91.9 MB in the beginning and 992.0 MB in the end (delta: -900.1 MB). Peak memory consumption was 301.6 MB. Max. memory is 5.3 GB. [2018-01-30 04:14:41,084 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 151.5 MB. Free memory is still 121.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 109.23 ms. Allocated memory is still 151.5 MB. Free memory was 116.6 MB in the beginning and 108.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 16.87 ms. Allocated memory is still 151.5 MB. Free memory was 108.2 MB in the beginning and 106.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. * RCFGBuilder took 296.17 ms. Allocated memory is still 151.5 MB. Free memory was 106.6 MB in the beginning and 93.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * IcfgTransformer took 11.52 ms. Allocated memory is still 151.5 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 68894.01 ms. Allocated memory was 151.5 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 91.9 MB in the beginning and 992.0 MB in the end (delta: -900.1 MB). Peak memory consumption was 301.6 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 analyzing trace of length 499 with TraceHistMax 33, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 21 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. TIMEOUT Result, 68.8s OverallTime, 34 OverallIterations, 33 TraceHistogramMax, 35.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1019 SDtfs, 9013 SDslu, 26468 SDs, 0 SdLazy, 19365 SolverSat, 1640 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11060 GetRequests, 8032 SyntacticMatches, 0 SemanticMatches, 3028 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83246 ImplicationChecksByTransitivity, 46.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=631occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 33 MinimizatonAttempts, 402 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 28.7s InterpolantComputationTime, 16757 NumberOfCodeBlocks, 16703 NumberOfCodeBlocksAsserted, 315 NumberOfCheckSat, 16693 ConstructedInterpolants, 0 QuantifiedInterpolants, 10642501 SizeOfPredicates, 927 NumberOfNonLiveVariables, 11878 ConjunctsInSsa, 958 ConjunctsInUnsatCore, 64 InterpolantComputations, 2 PerfectInterpolantSequences, 75385/144748 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/array_ptr_single_elem_init_false-unreach-call_true-termination.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_04-14-41-090.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_ptr_single_elem_init_false-unreach-call_true-termination.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_04-14-41-090.csv Completed graceful shutdown